A technique for continuous measurement of body movement from video

The movements that we make with our body vary continuously along multiple dimensions. However, many of the tools and techniques presently used for coding and analyzing hand gestures and other body movements yield categorical outcome variables. Focusing on categorical variables as the primary quantitative outcomes may mislead researchers or distort conclusions. Moreover, categorical systems may fail to capture the richness present in movement. Variations in body movement may be informative in multiple dimensions. For example, a single hand gesture has a unique size, height of production, trajectory, speed, and handshape. Slight variations in any of these features may alter how both the speaker and the listener are affected by gesture. In this paper, we describe a new method for measuring and visualizing the physical trajectory of movement using video. This method is generally accessible, requiring only video data and freely available computer software. This method allows researchers to examine features of hand gestures, body movement, and other motion, including size, height, curvature, and speed. We offer a detailed account of how to implement this approach, and we also offer some guidelines for situations where this approach may be fruitful in revealing how the body expresses information. Finally, we provide data from a small study on how speakers alter their hand gestures in response to different characteristics of a stimulus to demonstrate the utility of analyzing continuous dimensions of motion. By creating shared methods, we hope to facilitate communication between researchers from varying methodological traditions.     

Development and Validation of the Scientific Reasoning Scale

Scientific findings and innovations play an important role in a range of decisions faced by nonscientists, yet little is known about the skills that nonscientists need in order to read and evaluate scientific evidence. Drawing on research in public understanding of science, cognitive developmental psychology, and behavioral decision research, we develop an individual difference measure of scientific reasoning skills, defined as the skills needed to evaluate scientific findings in terms of the factors that determine their quality. We present the results of three studies assessing its psychometric validity. Our results indicate that the Scientific Reasoning Scale (SRS) is internally consistent and distinct from extant measures of scientific literacy. Participants with higher SRS scores are more likely to have beliefs consistent with the scientific consensus on potentially contentious issues, above and beyond education, political and religious beliefs, and scores on two widely used measures of scientific literacy. Participants with higher SRS scores also had better performance on a task requiring them to analyze scientific information. Our results suggest that the SRS provides a theoretically informed contribution to decoding lay responses to scientific results and controversies. Copyright © 2015 John Wiley & Sons, Ltd.     

The Long-Term Impact of Family Routines and Parental Knowledge on Alcohol Use and Health Behaviors: Results from a 14 Year Follow-Up

Previous research has found significant associations between family routines (e.g., time shared and family meals), parenting characteristics, and later adolescent health behaviors. In general, greater family interactions, parental monitoring, and more optimal parenting style have been associated with less alcohol use during adolescence. We expanded upon this work by examining effects of family and parenting characteristics on alcohol use and health behaviors during young adulthood. We also followed tenets of the Contextual Model of Parenting by examining the moderating effects of parenting style on the associations between parent/family practices and outcomes. Data came from the National Longitudinal Survey of Youth 1997. A total of 5419 youth were surveyed at 12–14 years of age, and then annually for the next 14 years; 4565 were surveyed at a 10 year follow-up and 4539 were examined at the 14 year follow-up (84% retention). Multivariate models, controlling for sex and race/ethnicity, indicated that, in general, family routines and parental knowledge in early adolescence were associated with healthier behaviors at both the 10-year and 14-follow-ups. Results also showed that the protective effects of parental knowledge and family routines were strongest in families characterized by and authoritative parenting style.     

An Examination of the Mediational Effects of Cognitive and Attitudinal Factors of a Parent Intervention to Reduce College Drinking

As part of a parent intervention to reduce heavy-drinking, college freshmen were assessed for their attitudes toward drinking and reasonable alternatives to drinking on the weekends, as well as cognitive variables underlying attitudinal variables. Intervention parents received a handbook the summer prior to college entrance with information about college drinking and best practices for parent-teen communication. Results revealed that the association between intervention condition and drinking outcomes was mediated by attitudes favorable to drinking and reasonable alternatives to drinking, as well as beliefs about alcohol related behavior. This parent program was shown to be efficacious for changing high-risk drinking in college. Findings are discussed regarding the further development of college drinking prevention programs involving parents.     

Cognitive-Behavioral Therapy for Adolescent Body Dysmorphic Disorder

The onset of appearance-related concerns associated with body dysmorphic disorder (BDD) typically occurs in adolescence, and these concerns are often severe enough to interfere with normal development and psychosocial functioning. Cognitive behavioral therapy (CBT) is an effective treatment for adults with BDD. However, no treatment studies focusing on adolescents with BDD have been conducted. The need for an effective treatment in this population led to the development of a brief CBT protocol with family involvement. The treatment focuses on enhancing an adolescent's quality of life through the reduction of maladaptive thoughts and behaviors, and incorporates skills training and parent training. Similar treatment packages have already been shown to be efficacious for children and adolescents with similar disorders, such as obsessive-compulsive disorder and social phobia. The following case illustrates the application of this brief CBT protocol for BDD in an adolescent, and highlights clinical considerations needed when adapting CBT for a pediatric population. Treatment was associated with clinically significant improvement in symptoms of BDD, self-esteem, depression, and quality of life. This report extends extant literature by suggesting that CBT may be a helpful treatment for adolescents with BDD.     

Relationship context and personality shape people's preferences for network relationship partners

This study investigates how people weight potential relationship partners' personal characteristics (i.e., warmth and competence) when deciding to initiate professional versus personal network relationships, and it also examines how certain personality traits (extraversion and conscientiousness) shape this process. Results from two samples indicate that people tend to value competence more highly when initiating professional relationships, whereas they tend to value warmth more highly when initiating personal relationships. Furthermore, neither extraversion nor conscientiousness was related to how people weighted competence when initiating professional relationships. However, supplementary analyses demonstrated that people high in conscientiousness tend to value competence and people high in agreeableness tend to value warmth in their network relationship partners, regardless of whether they are initiating a professional or personal relationship.     

Beyond the Belmont Principles: A Community‐Based Approach to Developing an Indigenous Ethics Model and Curriculum for Training Health Researchers Working with American Indian and Alaska Native Communities

Individuals responsible for carrying out research within their diverse communities experience a critical need for research ethics training materials that align with community values. To improve the capacity to meet local human subject protections, we created the research Ethics Training for Health in Indigenous Communities (rETHICS), a training curriculum aligned within American Indian and Alaska Native (AI/AN) context, culture, and community‐level ethical values and principles. Beginning with the Belmont Report and the Common Rule that defines research with human subjects (46 CFR 45), the authors convened three different expert panels (N = 37) to identify Indigenous research values and principles common across tribal communities. The resulting culturally grounded curriculum was then tested with 48 AI/AN individuals, 39 who also had recorded debriefing interviews. Using a thematic analysis, we coded the qualitative feedback from the expert panel discussions and the participant debriefings to assess content validity. Participants identified five foundational constructs needed to ensure cultural‐grounding of the AI/AN‐specific research training curriculum. These included ensuring that the module was: (a) framed within an AI/AN historical context; (b) reflected Indigenous moral values; (c) specifically linked AI/AN cultural considerations to ethical procedures; (d) contributed to a growing Indigenous ethics; and (e) provided Indigenous‐based ethics tools for decision making. Using community‐based consultation and feedback from participants led to a culturally grounded training curriculum that teaches research ethical principles and procedures for conducting research with AI/ANs. The curriculum is available for free and the community‐based process used can be adapted for other cultural groups.     

A Community's Response to Adverse Childhood Experiences: Building a Resilient,Trauma‐Informed Community

Adverse childhood experiences, or ACEs, may be mitigated by trauma‐informed social environments—programs, services, systems, communities—that offer responses to trauma that promote healing, recovery, and resilience. However, there is currently little empirical evidence to support the use of specific approaches to do so. Guided by a population health perspective, this paper describes a participatory community change process in response to ACEs that seeks to build a resilient, trauma‐informed community in Pottstown, PA. We examine the initial implementation phase of this change process, centered originally on the education sector and the social and behavioral health services sector, and then eventually expanding to 14 community sectors across two years. A variety of data sources and methods are used to track individual and organizational processes, as well as service system network processes. A central feature of this research is the use of data to generate hypotheses rather than test them. Data were also used to guide understanding and decision‐making during implementation. The results show that moving forward the community is well‐positioned to establish stronger inter‐agency and system supports for trauma‐informed practice in the service system and in the broader community. We discuss results for their implications for building resilient, trauma‐informed communities.     

Family,friend, and neighbour child care providers and maternal well‐being in low‐income systems: An ecological social perspective

Integrating theory from the family ecological systems and social support literatures with findings from child care research, in this study we develop and test a model relating family, friend, and neighbour (FFN) child care provider characteristics to perceived child care quality (provider reports of caregiving behaviours, mother‐provider caregiving relationship) and maternal well‐being (work‐family conflict, depressive symptoms). Results from phone interviews with 187 FFN providers receiving public subsidies indicated that even after controlling for familial status or household income, caregiver perceptions of higher quality care were associated with higher education levels, greater attachment to child care as a job; and lower provider depressive symptoms. After controlling for familial status, data analysed from a subset of 51 mother‐provider pairs, indicated that mothers using care from providers who reported higher quality parent‐caregiver social relationships reported lower work‐family conflict and depressive symptoms. This study suggests mothers who have providers with whom they have good caregiving interactions may experience positive social support and psychological crossover dynamics associated with mother well‐being.     

The amygdala is not necessary for unconditioned stimulus inflation after Pavlovian fear conditioning in rats

The basolateral complex (BLA) and central nucleus (CEA) of the amygdala play critical roles in associative learning, including Pavlovian conditioning. However, the precise role for these structures in Pavlovian conditioning is not clear. Recent work in appetitive conditioning paradigms suggests that the amygdala, particularly the BLA, has an important role in representing the value of the unconditioned stimulus (US). It is not known whether the amygdala performs such a function in aversive paradigms, such as Pavlovian fear conditioning in rats. To address this issue, Experiments 1 and 2 used temporary pharmacological inactivation of the amygdala prior to a US inflation procedure to assess its role in revaluing shock USs after either overtraining (Experiment 1) or limited training (Experiment 2), respectively. Inactivation of the BLA or CEA during the inflation session did not affect subsequent increases in conditioned freezing observed to either the tone conditioned stimulus (CS) or the conditioning context in either experiment. In Experiment 3, NBQX infusions into the BLA impaired the acquisition of auditory fear conditioning with an inflation-magnitude US, indicating that the amygdala is required for associative learning with intense USs. Together, these results suggest that the amygdala is not required for revaluing an aversive US despite being required for the acquisition of fear to that US.Pavlovian fear conditioning in rats is a behavioral model used to investigate the neurobiology underlying the development and maintenance of fear learning and memory (Grillon et al. 1996; LeDoux 1998, 2000; Bouton et al. 2001; Maren 2001b, 2005; Kim and Jung 2006). In this model, an innocuous conditioned stimulus (CS), such as a tone, is paired with an aversive unconditioned stimulus (US), such as a footshock. After one or more pairings, the rat learns that the CS predicts the US. As a consequence, CS presentations alone elicit a conditioned fear response (CR), which includes increases in heart rate, arterial blood pressure, hypoalgesia, potentiated acoustic startle, stress hormone release, and freezing (somatomotor immobility).The amygdala has been identified as one of the major regions in which fear memories are encoded and stored. Within the amygdala, the basolateral complex of the amygdala (BLA; consisting of the lateral, basolateral, and basomedial nuclei) and the central nucleus of the amygdala (CEA) receive convergent CS and US information and are involved in the acquisition of fear memories (LeDoux 1998, 2000; Fendt and Fanselow 1999; Davis and Whalen 2001; Maren 2001b; Schafe et al. 2001; Fanselow and Gale 2003; Wilensky et al. 2006; Zimmerman et al. 2007). In addition, the CEA has an important role in the expression of fear CRs (Fendt and Fanselow 1999; LeDoux 2000; Davis and Whalen 2001; Maren 2001b; Fanselow and Gale 2003). In support of this, many studies have shown that either permanent or temporary lesions of the BLA or CEA prevent the acquisition and/or expression of fear memories (Helmstetter 1992; Helmstetter and Bellgowan 1994; Campeau and Davis 1995; Maren et al. 1996a,b; Killcross et al. 1997; Muller et al. 1997; Walker and Davis 1997; Cousens and Otto 1998; Maren 1998, 1999, 2001a,b; Wilensky et al. 1999, 2000, 2006; Goosens and Maren 2001, 2003; Nader et al. 2001; Fanselow and Gale 2003; Gale et al. 2004; Koo et al. 2004; Zimmerman et al. 2007).In addition to its role in encoding CS–US associations during conditioning, recent work suggests that the amygdala is also involved in representing properties of the US itself. For example, temporary or permanent lesions of the BLA reduce both decrements in conditioned responding after devaluation of a food US (Hatfield et al. 1996; Killcross et al. 1997; Blundell et al. 2001; Balleine et al. 2003; Everitt et al. 2003; Pickens et al. 2003; Holland 2004) and increments in conditional responding after inflation of a shock US (Fanselow and Gale 2003). Moreover, recent electrophysiological studies in primates indicate that amygdala neurons represent the value of both aversive and appetitive outcomes (Paton et al. 2006; Belova et al. 2007, 2008; Salzman et al. 2007). These studies suggest that one function of the BLA is to represent specific properties of biologically significant events, such as the food or shock USs that are typically used in Pavlovian conditioning paradigms. By this view, the BLA may represent specific sensory properties of USs that shape the nature of learned behavioral responses to the US (Balleine and Killcross 2006) and allow CSs to gain access to the incentive value of the US (Everitt et al. 2003).In contrast to this view, we recently reported that rats with neurotoxic BLA lesions exhibit normal US revaluation after Pavlovian fear conditioning (Rabinak and Maren 2008). In this study, auditory fear conditioning (75 CS–US trials) with a moderate footshock (1 mA) was followed by several exposures (five US-alone trials) to an intense footshock (3 mA) during an inflation session. Both intact rats and rats with BLA lesions exhibit a robust increase in conditional freezing to the auditory CS during a subsequent retention test (Rabinak and Maren 2008). Control experiments suggested that this was due to a revaluation of the US with which the CS was associated, rather than nonassociative sensitization of fear engendered by exposure to intense shock. These data reveal that the BLA may not be necessary for representing properties of shock USs during Pavlovian fear conditioning. To address these issues further, we have examined the consequence of reversible pharmacological manipulations of the amygdala during US inflation on conditional fear responses established with either extensive or limited training.