Department of Psychology

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Open Access
Selecting the Number and Labels of Topics in Topic Modeling: A Tutorial
(Sage Journals, 2023-05-25) Weston, Sara J.; Shryock, Ian; Light, Ryan; Fisher, Phillip A.
Topic modeling is a type of text analysis that identifies clusters of co-occurring words, or latent topics. A challenging step of topic modeling is determining the number of topics to extract. This tutorial describes tools researchers can use to identify the number and labels of topics in topic modeling. First, we outline the procedure for narrowing down a large range of models to a select number of candidate models. This procedure involves comparing the large set on fit metrics, including exclusivity, residuals, variational lower bound, and semantic coherence. Next, we describe the comparison of a small number of models using project goals as a guide and information about topic representative and solution congruence. Finally, we describe tools for labeling topics, including frequent and exclusive words, key examples, and correlations among topics.
Open Access
Parent Gender Affects the Influence of Parent Emotional Eating and Feeding Practices on Child Emotional Eating
(Frontiers in Psychology, 2021-09-10) Trevino, Shaina D.; Kelly, Nichole R.; Budd, Elizabeth L.; Giuliani, Nicole R.
Extant research supports a direct association between parent’s own emotional eating and their child’s emotional eating, and demonstrates correlations among parent emotional eating, feeding practices, and child emotional eating. However, the majority of this work focuses on the separate influences of these factors. The current study aims to add to the literature by simultaneously examining the indirect effects of three major parental feeding practices (i.e., emotion regulation, instrumental, and restrictive feeding) in the association between parent emotional eating and child emotional eating, and exploring how these indirect effects vary based on parent gender. Parents (86 fathers, 324 mothers) of an elementary school-age child (M = 8.35, SD = 2.29, range = 5–13) completed an online survey through Qualtrics Panels. Results suggested that restrictive feeding partially accounted for the association between parent and child emotional eating in the combined sample of mothers and fathers. Exploratory analyses revealed that the indirect effects of parental feeding practices in the association between parent emotional eating and child emotional eating varied based on parent gender. Among mothers, restrictive feeding was the only feeding practice that partially accounted for the association between maternal and child emotional eating, whereas all three feeding practices fully accounted for the association between father and child emotional eating. As the bulk of the literature on parent emotional eating and feeding has solely focused on mothers, these findings offer insight into how feeding practices may differentially function in the relation between parent emotional eating and child emotional eating for mothers versus fathers.
Open Access
The numeric understanding measures: Developing and validating adaptive and nonadaptive numeracy scales
(Cambridge University Press, 2023-06-28) Silverstein, Michael C.; Bjälkebring, Pär; Shoots-Reinhard, Brittany; Peters, Ellen
Numeracy—the ability to understand and use numeric information—is linked to good decision-making. Several problems exist with current numeracy measures, however. Depending on the participant sample, some existing measures are too easy or too hard; also, established measures often contain items well-known to participants. The current article aimed to develop new numeric understanding measures (NUMs) including a 1-item (1-NUM), 4-item (4-NUM), and 4-item adaptive measure (A-NUM). In a calibration study, 2 participant samples (n = 226 and 264 from Amazon’s Mechanical Turk [MTurk]) each responded to half of 84 novel numeracy items.We calibrated items using 2-parameter logistic item response theory (IRT) models. Based on item parameters, we developed the 3 new numeracy measures. In a subsequent validation study, 600 MTurk participants completed the new numeracy measures, the adaptive Berlin Numeracy Test, and the Weller Rasch-Based Numeracy Test, in randomized order. To establish predictive and convergent validities, participants also completed judgment and decision tasks, Raven’s progressive matrices, a vocabulary test, and demographics. Confirmatory factor analyses suggested that the 1-NUM, 4-NUM, and A-NUM load onto the same factor as existing measures. The NUM scales also showed similar association patterns to subjective numeracy and cognitive ability measures as established measures. Finally, they effectively predicted classic numeracy effects. In fact, based on power analyses, the A-NUM and 4-NUM appeared to confer more power to detect effects than existing measures. Thus, using IRT, we developed 3 brief numeracy measures, using novel items and without sacrificing construct scope. The measures can be downloaded as Qualtrics files (https://osf.io/pcegz/).
Open Access
Intimations of a New Paradigm for Lexical Studies in Psychology
(Frontiers in Psychology, 2022-07-01) Saucier, Gerard
Several consecutive productive decades of research on basic dimensions of personality have given a firmer footing to the discipline due, in part, to contributions of lexical studies of personality. These studies helped establish more consensus as to structure—a set of a few dimensions worth measuring—which has enabled knowledge to accumulate within something of a standard assessment paradigm. Admittedly, these dimensions are quite broad, and if one wishes to characterize their content quite accurately, he or she must often resort to compound labels (e.g., honesty/humility, intellect/imagination). The factors they refer to are, basically, collages of more fine-grained components; the composition of the collages varies somewhat from one measure to another, and one language to another. There are, however, cracks in the paradigm. The “few dimensions” most widely regarded as measurement worthy—the Big Five—embody a good degree of ethnocentric bias, deriving from origin in Western samples and studies in and of Germanic-language-family contexts. These dimensions often replicate only partially or weakly. And, although these have good evidence for comparative predictive validity (in competition with SES and IQ; Roberts et al., 2007), the magnitude of prediction is not overwhelming. Better prediction is likely to come from more comprehensive models (Paunonen and Ashton, 2001; Mõttus et al., 2017). In lexical studies, five factors account for only a narrow slice—about a quarter—of the variance that stimuli based on the personality vocabulary can afford (e.g., Saucier and Iurino, 2020). Personality data are not 75% noise! Structures with far more than five factors (accounting for closer to half the variance) have recently been found to be replicable to a good degree (Saucier and Iurino, 2020).
Open Access
Aesthetics and Psychological Effects of Fractal Based Design
(Frontiers in Psychology, 2021-08-17) Robles, Kelly E.; Roberts, Michelle; Viengkham, Catherine; Smith, Julian H.; Rowland, Conor; Moslehi, Saba; Stadlober, Sabrina; Lesjak, Anastasija; Lesjak, Martin; Taylor, Richard P.; Spehar, Branka; Sereno, Margaret
Highly prevalent in nature, fractal patterns possess self-similar components that repeat at varying size scales. The perceptual experience of human-made environments can be impacted with inclusion of these natural patterns. Previous work has demonstrated consistent trends in preference for and complexity estimates of fractal patterns. However, limited information has been gathered on the impact of other visual judgments. Here we examine the aesthetic and perceptual experience of fractal ‘global-forest’ designs already installed in humanmade spaces and demonstrate how fractal pattern components are associated with positive psychological experiences that can be utilized to promote occupant wellbeing. These designs are composite fractal patterns consisting of individual fractal ‘tree-seeds’ which combine to create a ‘global fractal forest.’ The local ‘tree-seed’ patterns, global configuration of tree-seed locations, and overall resulting ‘global-forest’ patterns have fractal qualities. These designs span multiple mediums yet are all intended to lower occupant stress without detracting from the function and overall design of the space. In this series of studies, we first establish divergent relationships between various visual attributes, with pattern complexity, preference, and engagement ratings increasing with fractal complexity compared to ratings of refreshment and relaxation which stay the same or decrease with complexity. Subsequently, we determine that the local constituent fractal (‘treeseed’) patterns contribute to the perception of the overall fractal design, and address how to balance aesthetic and psychological effects (such as individual experiences of perceived engagement and relaxation) in fractal design installations. This set of studies demonstrates that fractal preference is driven by a balance between increased arousal (desire for engagement and complexity) and decreased tension (desire for relaxation or refreshment). Installations of these composite mid-high complexity ‘globalforest’ patterns consisting of ‘tree-seed’ components balance these contrasting needs, and can serve as a practical implementation of biophilic patterns in human-made environments to promote occupant wellbeing.
Open Access
Contextual considerations for deception production and detection in forensic interviews
(Frontiers in Psychology, 2023-02-07) Markowitz, David M.; Hancock, Jeffery T.; Woodworth, Michael T.; Ely, Maxwell
Most deception scholars agree that deception production and deception detection effects often display mixed results across settings. For example, some liars use more emotion than truth-tellers when discussing fake opinions on abortion, but not when communicating fake distress. Similarly, verbal and nonverbal cues are often inconsistent predictors to assist in deception detection, leading to mixed accuracies and detection rates. Why are lie production and detection effects typically inconsistent? In this piece, we argue that aspects of the context are often unconsidered in how lies are produced and detected. Greater theory-building related to contextual constraints of deception are therefore required. We reintroduce and extend the Contextual Organization of Language and Deception (COLD) model, a framework that outlines how psychological dynamics, pragmatic goals, and genre conventions are aspects of the context that moderate the relationship between deception and communication behavior such as language. We extend this foundation by proposing three additional aspects of the context — individual differences, situational opportunities for deception, and interpersonal characteristics — for the COLD model that can specifically inform and potentially improve forensic interviewing. We conclude with a forward-looking perspective for deception researchers and practitioners related to the need for more theoretical explication of deception and its detection related to the context.
Open Access
Recommendations for Diversifying Racial and Ethnic Representation in Autism Intervention Research: A Crossover Review of Recruitment and Retention Practices in Pediatric Mental Health
(2022-10-31) Machalicek, Wendy; Glugatch, Lindsay; Erturk, Buket; Brafford, Tasia; Kunze, Megan; Drew, Christine; Douglas, Allaina; Storie, Sloan; Crowe, Rebecca; Magaña, Sandy
Disparities in diagnosis and access to healthcare and therapeutic services are well-documented for children with autism spectrum disorder (ASD) from minoritized races and ethnicities, but there is little empirical research to guide the selection and implementation of interventions and practices that will effectively support racially/ethnically diverse children with ASD and their families. This cross-over systematic review summarizes parent-mediated intervention research of children with or at risk for mental health disorders to identify potentially effective recruitment and retention strategies for diverse participants in parent-mediated intervention research for children with autism. Electronic database keyword, lead author name searches in PyschNet, MEDLINE, and ancestral searches were conducted to identify 68 relevant articles that used experimental designs to evaluate the effects of parent-mediated interventions on children with or at risk for mental health disorders. Articles were coded for participant demographics; intervention setting and type, recruitment and retention strategies, cultural adaptation of intervention, and reported attrition. Findings are discussed and applied to practices in autism parent-mediated intervention research. Suggestions for future research and limitations are discussed.
Open Access
Service Needs for Corrections-Involved Parents With a History of Problematic Opioid Use: A Community Needs Assessment
(Frontiers in Psychology, 2021-10-21) Clark, Miriam; Kjellstrand, Jean; Morgan, Kaycee
The incarceration of a parent is often a continuation of a challenging family situation marked by poverty, unstable housing, trauma, and abuse. These challenges make it difficult for incarcerated parents reentering their communities to raise their children effectively and, thus, increase the likelihood of poor outcomes for their children. Children whose parents are also battling opioid misuse have an even higher risk for long-term problems. This study uses survey data from 48 community service providers to better understand the service needs of parents with histories of problematic opioid use who are reentering their communities after incarceration. Community service providers recommended implementing intervention programs that cover critical information related to basic needs, supportive community resources, drug treatment programs, and parenting to help individuals thrive in their communities and meet their children’s needs. The services most frequently identified by providers as important for reentering parents included housing, mentors or peer counselors, mental health support, group therapy and other support programs. Key topics to address in parenting programs included problem-solving techniques, the effect of parent’s addiction on children, and strategies for connecting with and meeting children’s needs. Suggestions are made for future research and intervention development.
Open Access
Hierarchical Inference in Sound Change: Words, Sounds, and Frequency of Use
(Frontiers in Psychology, 2021-08-12) Kapatsinski, Vsevolod
This paper aims examines the role of hierarchical inference in sound change. Through hierarchical inference, a language learner can distribute credit for a pronunciation between the intended phone and the larger units in which it is embedded, such as triphones, morphemes, words and larger syntactic constructions and collocations. In this way, hierarchical inference resolves the longstanding debate about the unit of sound change: it is not necessary for change to affect only sounds, or only words. Instead, both can be assigned their proper amount of credit for a particular pronunciation of a phone. Hierarchical inference is shown to generate novel predictions for the emergence of stable variation. Under standard assumptions about linguistic generalization, it also generates a counterintuitive prediction of a U-shaped frequency effect in an advanced articulatorilymotivated sound change. Once the change has progressed far enough for the phone to become associated with the reduced pronunciation, novel words will be more reduced than existing words that, for any reason, have become associated with the unreduced variant. Avoiding this prediction requires learners to not consider novel words to be representative of the experienced lexicon. Instead, learners should generalize to novel words from other words that are likely to exhibit similar behavior: rare words, and the words that occur in similar contexts. Directions for future work are outlined.
Open Access
Spatialization of Time in the Entorhinal-Hippocampal System
(Frontiers in Behavioral Neuroscience, 2022-01-06) House, Troy M.
The functional role of the entorhinal-hippocampal system has been a long withstanding mystery. One key theory that has become most popular is that the entorhinalhippocampal system represents space to facilitate navigation in one’s surroundings. In this Perspective article, I introduce a novel idea that undermines the inherent uniqueness of spatial information in favor of time driving entorhinal-hippocampal activity. Specifically, by spatializing events that occur in succession (i.e., across time), the entorhinalhippocampal system is critical for all types of cognitive representations. I back up this argument with empirical evidence that hints at a role for the entorhinal-hippocampal system in non-spatial representation, and computational models of the logarithmic compression of time in the brain.
Open Access
Associations Among Food Delay of Gratification, Cognitive Measures, and Environment in a Community Preschool Sample
(Frontiers in Nutrition, 2022-04-11) Giuliani, Nicole R.; Kelly, Nichole R.
Much of the work on the development of appetite self-regulation in early childhood employs tasks assessing Delay of Gratification (DoG). While this skill is thought to rely on “cool” cognitive processes like effortful control, executive functioning, and self-regulation, demonstration of how laboratory measures of food DoG relate to common assessments of those cognitive processes in community samples of children is needed. This study presents secondary data investigating the associations between two laboratory tasks of food DoG, the Snack Delay and Tongue Tasks, and an array of laboratory and parent-report cognitive measures in a sample of 88 children ages 3-6 (M age = 4.05, SD = 0.76), as well as how four measures of the child’s environment were associated with food DoG. Results indicated that both measures of food DoG were positively correlated with performance on the cognitive tasks, with stronger associations observed for the Tongue Task. Family income was positively associatedwith food DoG asmeasured by the Tongue Task, and child negative life events in the past year were negatively correlated with food DoG as measured by the Snack Delay Task. These findings present the pattern of associations between cognitive tasks and food DoG, the development of which may be meaningfully affected by specific aspects of family environment.
Open Access
Mapping Individual Differences on the Internet: Case Study of the Type 1 Diabetes Community
(JMIR Publications, 2021-05-27) Bedford-Petersen, Cianna; Weston, Sara J.
Background: Social media platforms, such as Twitter, are increasingly popular among communities of people with chronic conditions, including those with type 1 diabetes (T1D). There is some evidence that social media confers emotional and health-related benefits to people with T1D, including emotional support and practical information regarding health maintenance. Research on social media has primarily relied on self-reports of web-based behavior and qualitative assessment of web-based content, which can be expensive and time-consuming. Meanwhile, recent advances in natural language processing have allowed for large-scale assessment of social media behavior. Objective: This study attempts to document the major themes of Twitter posts using a natural language processing method to identify topics of interest in the T1D web-based community. We also seek to map social relations on Twitter as they relate to these topics of interest, to determine whether Twitter users in the T1D community post in “echo chambers,” which reflect their own topics back to them, or whether users typically see a mix of topics on the internet. Methods: Through Twitter scraping, we gathered a data set of 691,691 tweets from 8557 accounts, spanning a date range from 2008 to 2020, which includes people with T1D, their caregivers, health practitioners, and advocates. Tweet content was analyzed for sentiment and topic, using Latent Dirichlet Allocation. We used social network analysis to examine the degree to which identified topics are siloed within specific groups or disseminated through the broader T1D web-based community. Results: Tweets were, on average, positive in sentiment. Through topic modeling, we identified 6 broad-bandwidth topics, ranging from clinical to advocacy to daily management to emotional health, which can inform researchers and practitioners interested in the needs of people with T1D. These analyses also replicate prior work using machine learning methods to map social behavior on the internet. We extend these results through social network analysis, indicating that users are likely to see a mix of these topics discussed by the accounts they follow. Conclusions: Twitter communities are sources of information for people with T1D and members related to that community. Topics identified reveal key concerns of the T1D community and may be useful to practitioners and researchers alike. The methods used are efficient (low cost) while providing researchers with enormous amounts of data. We provide code to facilitate the use of these methods with other populations.
Open Access
Direct and indirect associations among mothers’ invalidating childhood environment, emotion regulation difficulties, and parental apology
(BMC, 2022-08-15) Adams-Clark, Alexis A.; Lee, Angela H.; Everett, Yoel; Zarosinski, Arianna; Martin, Christina Gamache; Zalewski, Maureen
Background: Effective emotion regulation abilities are essential for engaging in positive, validating parenting practices. Yet, many parents report difficulties with both emotion regulation and positive parenting, and these difficulties may in part be the result of parents’ own childhood experiences of invalidation. Building upon prior literature documenting the intergenerational transmission of invalidation and emotion dysregulation, the present study examined the associations between these constructs and a specific parenting practice – parental apology – that can be conceptualized as a type of validating parenting practice. Methods: Using a sample of 186 community mothers, we tested direct and indirect relationships via correlational and path analysis between participants’ retrospective reports of parental invalidation during childhood, difficulties with emotion regulation, and two aspects of parental apology – proclivity (i.e., participants’ self-reported propensity to apologize to their child) and effectiveness (i.e., participants’ inclusion of specific apology content when prompted to write a child-directed apology). Parental invalidation, difficulties with emotion regulation, and parental apology proclivity were measured via self-report questionnaires. Apology effectiveness was measured by coding written responses to a hypothetical vignette. Results: There was a significant negative bivariate relationship between difficulties with emotion regulation and parental apology proclivity and effectiveness. Parents’ own childhood experiences of invalidation were linked to parental apology indirectly via emotion regulation difficulties. Conclusions: Results suggest that mothers with greater difficulties regulating emotions may be less able to or have a lower proclivity to apologize to their child when appropriate. Thus, parent apology may be an important addition to current calls for parent validation training.
Open Access
The Big Five Across Socioeconomic Status: Measurement Invariance, Relationships, and Age Trends
(University of California Press, 2021-06-10) Hughes, Bradley T.; Costello, Cory K.; Pearman, Joshua J.; Razavi, Pooya; Bedford-Petersen, Cianna; Ludwid, Rita M.; Srivastava, Sanjay
Associations between socioeconomic status (SES) and personality traits have important implications for theory and application. Progress in understanding these associations depends on valid measurement, unbiased estimation, and careful assessment of generalizability. In this registered report, we used data from AIID, a large online study, to address three basic questions about personality and SES. First, we evaluated the measurement invariance of a common measure of personality, the Big Five Inventory, across indicators of educational attainment, income, and occupational prestige. Fit indices showed some instances of detectable noninvariance, but with little practical impact on substantive results. Second, we estimated associations between SES and personality. Results showed that personality and SES were largely independent (most rs < .1), in contrast to predictions derived from several previous studies. Third, we tested whether age trends in personality were moderated by SES. Results did not support predictions from social investment theory, but they did suggest that age trends were largely generalizable across SES. We discuss the implications of these findings for developing and validating personality measures for use in diverse samples. We also discuss the implications for theories that propose that the Big Five are responsive to, or partially responsible for, people’s economic and social conditions.
Open Access
A Researcher’s Guide to the Measurement and Modeling of Puberty in the ABCD Study® at Baseline
(Frontiers Media, 2021-05-05) Cheng, Theresa W.; Magis-Weinberg, Lucía; Williamson, Victoria Guazzelli; Ladouceur, Cecile D.; Whittle, Sarah L.; Herting, Megan M.; Uban, Kristina A.; Byrne, Michelle L.; Barendse, Marjolein E. A.; Shirtcliff, Elizabeth A.; Pfeifer, Jennifer H.
The Adolescent Brain Cognitive Development℠ (ABCD) Study is an ongoing, diverse, longitudinal, and multi-site study of 11,880 adolescents in the United States. The ABCD Study provides open access to data about pubertal development at a large scale, and this article is a researcher’s guide that both describes its pubertal variables and outlines recommendations for use. These considerations are contextualized with reference to cross-sectional empirical analyses of pubertal measures within the baseline ABCD dataset by Herting, Uban, and colleagues (2021). We discuss strategies to capitalize on strengths, mitigate weaknesses, and appropriately interpret study limitations for researchers using pubertal variables within the ABCD dataset, with the aim of building toward a robust science of adolescent development.
Open Access
Delay of Gratification Predicts Eating in the Absence of Hunger in Preschool-Aged Children
(Frontiers Media, 2021-03-19) Giuliani, Nicole R.; Kelly, Nichole R.
Poor ability to regulate one's own food intake based on hunger cues may encourage children to eat beyond satiety, leading to increased risk of diet-related diseases. Self-regulation has multiple forms, yet no one has directly measured the degree to which different domains of self-regulation predict overeating in young children. The present study investigated how three domains of self-regulation (i.e., appetitive self-regulation, inhibitory control, and attentional control) predicted eating in the absence of hunger (EAH) in a community sample of 47 preschool-aged children (M age = 4.93, SD = 0.86). Appetitive self-regulation, as measured using a delay of gratification task, was significantly and negatively associated with EAH 1 year later (p < 0.5). Measures of inhibitory and attentional control did not significantly predict EAH. These results suggest that food-related self-regulation may be a better predictor of overeating behaviors than general measures of self-regulation.
Open Access
Perceived Neighborhood Crime Safety Moderates the Association Between Racial Discrimination Stress and Chronic Health Conditions Among Hispanic/Latino Adults
(Frontiers Media, 2021-02-15) Budd, Elizabeth L.; Giuliani, Nicole R.; Kelly, Nichole R.
Background: Little is known about the link between perceived neighborhood walkability and prevalence of chronic disease. Even less is known regarding this association among Hispanic/Latino adults, despite exhibiting high rates of chronic diseases. Stress due to racial discrimination is a harmful social determinant of health in Hispanics/Latinos. Having both low perceived neighborhood walkability and high racial discrimination stress may exacerbate the chronic disease status of Hispanics/Latinos. Among a U.S. national sample of Hispanic/Latino adults, this cross-sectional study aims to examine (1) the associations among overall perceived neighborhood walkability, racial discrimination stress, and having a chronic health condition; and (2) whether overall perceived neighborhood walkability moderates the hypothesized association between racial discrimination stress and having a chronic health condition. Methods: In January 2018, 798 Hispanic/Latino adults (M age = 39.7 years, SD = 15.1; 58.6% female; 70.0% U.S. born; 52.0% Mexican/Mexican American) responded to a survey via Qualtrics Panels. Surveys included the Neighborhood Environment Walkability Scale-Abbreviated, Hispanic Stress Inventory-2, and self-reported presence/absence of chronic health conditions (e.g., hypertension, heart disease). A logistic regression was conducted testing for the moderation of the main effect of racial discrimination stress on the presence of a chronic health condition by overall perceived neighborhood walkability. Results: After controlling for age, body mass index, and income, racial discrimination stress was inversely associated with overall perceived neighborhood walkability (b = −0.18, p < 0.001) and positively associated with having a chronic health condition (OR = 1.02; 95% CI [1.00, 1.03]). While overall perceived neighborhood walkability was not associated with having a chronic health condition, perceived crime safety was inversely associated with having a chronic health condition (OR = 0.94; 95% CI [0.89, 0.99]). Perceived crime safety moderated the positive association between discrimination stress and having a chronic health condition, such that the association was only significant among those who perceived their neighborhood to be less safe (β = −0.004, 95% CI [−0.01, −0.00]). Conclusions: Overall perceived neighborhood walkability was inversely associated with racial discrimination stress, but not associated with having a chronic health condition. Perceived neighborhood crime safety, but not infrastructure or aesthetics, matters when it comes to the link between racial discrimination stress and having a chronic health condition among Hispanics/Latinos.
Open Access
Rapid assessment of psychological and epidemiological correlates of COVID-19 concern, financial strain, and health-related behavior change in a large online sample
(Public Library of Science, 2020-11-11) Nelson, Benjamin W.; Pettitt, Adam; Flannery, Jessica E.; Allen, Nicholas B.
COVID-19 emerged in November 2019 leading to a global pandemic that has not only resulted in widespread medical complications and loss of life, but has also impacted global economies and transformed daily life. The current rapid response study in a convenience online sample quickly recruited 2,065 participants across the United States, Canada, and Europe in late March and early April 2020. Cross-sectional findings indicated elevated anxiety and depressive symptoms compared to historical norms, which were positively associated with COVID-19 concern more strongly than epidemiological data signifying risk (e.g., world and country confirmed cases). Employment loss was positively associated with greater depressive symptoms and COVID-19 concern, and depressive symptoms and COVID-19 concern were significantly associated with more stringent self-quarantine behavior. The rapid collection of data during the early phase of this pandemic is limited by under-representation of non-White and middle age and older adults. Nevertheless, these findings have implications for interventions to slow the spread of COVID-19 infection.
Open Access
A shared fractal aesthetic across development
(Nature Communications, 2020-11) Robles, Kelly E.; Liaw, Nicole A.; Taylor, Richard P.; Baldwin, Dare A.; Sereno, Margaret
Fractal patterns that repeat at varying size scales comprise natural environments and are also present in artistic works deemed to be highly aesthetic. Observers’ aesthetic preferences vary in relation to fractal complexity. Previous work demonstrated that fractal preference consistently peaks at low-to-moderate complexity for patterns that repeat in a statistical manner across scale, whereas preference for exact repetition fractals peaks at a higher complexity due to the presence of order introduced by symmetry and exact recursion of features. However, these highly consistent preference trends have been demonstrated only in adult populations, and the extent to which exposure, development, or individual differences in perceptual strategies may impact preference has not yet been established. Here, we show differences in preference between fractal-type, but no differences between child and adult preferences, and no relationship between systemizing tendencies (demonstrated by the Systemizing Quotient and Ponzo task) and complexity preferences, further supporting the universality of fractal preference. Consistent preferences across development point toward shared general aesthetic experience of these complexities arising from a fluency of fractal processing established relatively early in development. This in part determines how humans experience natural patterns and interact with natural and built environments.
Open Access
The relationship between shape perception accuracy and drawing ability
(Nature Communications, 2022-09) Robles, Kelly E.; Bies, A. J.; Lazarides, S.; Sereno, Margaret
Accurate shape perception is critical for object perception, identification, manipulation, and recreation. Humans are capable of making judgements of both objective (physical) and projective (retinal) shape. Objective judgements benefit from a global approach by incorporating context to overcome the effects of viewing angle on an object’s shape, whereas projective judgements benefit from a local approach to filter out contextual information. Realistic drawing skill requires projective judgements of 3D targets to accurately depict 3D shape on a 2D surface, thus benefiting from a local approach. The current study used a shape perception task that comprehensively tests the effects of context on shape perception, in conjunction with a drawing task and several possible measures of local processing bias, to show that the perceptual basis of drawing skill in neurotypical adults is not due to a local processing bias. Perceptual flexibility, the ability to process local or global information as needed, is discussed as a potential mechanism driving both accurate shape judgements and realistic drawing.