Conditionals and consequences

We examine the notion of conditionals and the role of conditionals in inductive logics and arguments. We identify three mistakes commonly made in the study of, or motivation for, non-classical logics. A nonmonotonic consequence relation based on evidential probability is formulated. With respect to this acceptance relation some rules of inference of System P are unsound, and we propose refinements that hold in our framework.     

Evidence-based practice implementation and staff emotional exhaustion in children's services

Understanding the implementation of evidence-based practice (EBP) in community service settings is critical for the successful translation of research to practice. However, we have limited research evidence about the impact of EBP implementation on the mental health and social service workforce. In a previous study we demonstrated reduced staff turnover where an EBP was implemented with fidelity monitoring in the form of supportive ongoing supervision and consultation. Other research has shown that staff burnout and emotional exhaustion in particular is associated with poor quality of care and increased staff turnover intentions and turnover. Current research, however, has focused less on the effects that EBP implementation may have on staff emotional exhaustion. The present study investigates the association of EBP implementation and fidelity monitoring with staff emotional exhaustion in a statewide EBP implementation study. The 21 case-management teams in this study were randomized in a 2 (EBP vs. services as usual [SAU]) by 2 (monitoring vs. no monitoring) design. The EBP in this study was SafeCare^®, a home-based intervention that aims to reduce child neglect in at-risk families. SafeCare was developed from a behavior analysis approach and is based in cognitive behavioral principles. In keeping with our previous research, we hypothesized that providers implementing SafeCare with monitoring would have the lowest levels of emotional exhaustion and those receiving additional monitoring not in the context of EBP implementation would have higher emotional exhaustion relative to the other groups. Results supported our hypotheses in that we found lower emotional exhaustion for staff implementing the EBP but higher emotional exhaustion for staff receiving only fidelity monitoring and providing SAU. Together, these results suggest a potential staff and organizational benefit to EBP implementation and we discuss implications of the findings relative to EBPs and to fidelity monitoring.     

Exploration and exploitation during sequential search

When we learn how to throw darts we adjust how we throw based on where the darts stick. Much of skill learning is computationally similar in that we learn using feedback obtained after the completion of individual actions. We can formalize such tasks as a search problem; among the set of all possible actions, find the action that leads to the highest reward. In such cases our actions have two objectives: we want to best utilize what we already know (exploitation), but we also want to learn to be more successful in the future (exploration). Here we tested how participants learn movement trajectories where feedback is provided as a monetary reward that depends on the chosen trajectory. We mathematically derived the optimal search policy for our experiment using decision theory. The search behavior of participants is well predicted by an ideal searcher model that optimally combines exploration and exploitation.     

Gaze behavior and affect at 6 months: predicting clinical outcomes and language development in typically developing infants and infants at risk for autism

This paper presents follow‐up longitudinal data to research that previously suggested the possibility of abnormal gaze behavior marked by decreased eye contact in a subgroup of 6‐month‐old infants at risk for autism ( Merin, Young, Ozonoff & Rogers, 2007 ). Using eye‐tracking data and behavioral data recorded during a live mother–infant interaction involving the still‐face procedure, the predictive utility of gaze behavior and affective behaviors at 6 months was examined using diagnostic outcome data obtained longitudinally over the following 18 months. Results revealed that none of the infants previously identified as showing lower rates of eye contact had any signs of autism at outcome. In contrast, three infants who were diagnosed with autism demonstrated consistent gaze to the eye region and typical affective responses at 6 months. Individual differences in face scanning and affective responsivity during the live interaction were not related to any continuous measures of symptom frequency or symptom severity. In contrast, results of growth curve models for language development revealed significant relationships between face scanning and expressive language. Greater amounts of fixation to the mother's mouth during live interaction predicted higher levels of expressive language at outcome and greater rates of growth. These findings suggest that although gaze behavior at 6 months may not provide early markers for autism as initially conceived, gaze to the mouth in particular may be useful in predicting individual differences in language development.     

Solving Social Problems Like a Psychologist

ABSTRACT— We suggest that psychologists can play a larger role in the solution of important social problems. Psychology brings two important qualities to the study of social problems: attention to psychological process and rigorous methodology. Our key task is to define social problems in part as psychological problems, and to conduct rigorous research that tests novel psychological solutions. Examples of research that has taken this path—research on race differences in academic performance, on the training of executive function and intelligence, and on the provision of socially constructive default decisions—are provided. We argue that addressing social problems can enrich our science by connecting psychologists to interdisciplinary teams and by providing contexts in which to demonstrate, in striking ways, the value of a psychological approach.     

Upward and downward physical appearance comparisons: Development of scales and examination of predictive qualities

Despite good theoretical and empirical rationale for assessing tendencies to make upward and downward physical appearance comparisons no measure for these specific constructs exists. The present work developed and tested the psychometric properties of upward and downward physical appearance comparison scales. The scales were administered to participants (N = 224) along with measures of general appearance comparison tendencies, body image, disordered eating, Antifat and Antigay attitudes. The scales displayed good psychometric properties. Importantly, the upward but not downward physical appearance comparison scale predicted lower Appearance Evaluation and higher EAT-26 scores. Conversely, the downward but not upward physical appearance comparison scale predicted higher Appearance Evaluation and greater Antifat Attitudes (Dislike). The scales were unrelated to a nonappearance related construct. These new measures fill a gap in the literature and may be of benefit to researchers interested in body image, appearance concerns, eating disorders, social comparison, and obesity prejudice.     

There’s more to the working memory capacity—fluid intelligence relationship than just secondary memory

The present study examined the claim that secondary memory processes account for the correlation between working memory capacity and fluid intelligence via a latent variable analysis. In the present study, participants performed multiple measures of secondary memory, working memory capacity, and fluid intelligence. Structural equation modeling suggested that both secondary memory and working memory capacity account for unique variance in fluid intelligence. These results are inconsistent with recent claims that working memory capacity does not account for variance in fluid intelligence over and above what is accounted for by secondary memory. Rather, the results are consistent with models of working memory capacity that suggest that both maintenance and retrieval processes are needed to account for the substantial relation between working memory capacity and fluid intelligence.     

Spatial recall improved by retrieval enactment

Evidence from studies of intentional learning suggests that the accuracy of recall is not assisted by appropriate enactment at retrieval, as opposed to encoding. In the present study, long-term recall of spatial arrays following incidental learning (text messaging or calculator use) was tested under three different motor conditions at retrieval. For both letter and number arrays, the accuracy of recall was found to be improved by relevant enactment at the time of retrieval, relative to retrieval with no movement. In contrast, irrelevant movement was found to produce an impairment in accuracy. The overall accuracy of recalling a letter array was found to be a power-law function of the frequency of exposure to the array. The findings are discussed in terms of the hypothesis that appropriate movement during memory retrieval recruits egocentric representations that supplement allocentric representations subserving longer term spatial recall.