Visual statistical learning in the newborn infant

Statistical learning – implicit learning of statistical regularities within sensory input – is a way of acquiring structure within continuous sensory environments. Statistics computation, initially shown to be involved in word segmentation, has been demonstrated to be a general mechanism that operates across domains, across time and space, and across species. Recently, statistical leaning has been reported to be present even at birth when newborns were tested with a speech stream. The aim of the present study was to extend this finding, by investigating whether newborns’ ability to extract statistics operates in multiple modalities, as found for older infants and adults. Using the habituation procedure, two experiments were carried out in which visual sequences were presented. Results demonstrate that statistical learning is a general mechanism that extracts statistics across domain since the onset of sensory experience. Intriguingly, present data reveal that newborn learner’s limited cognitive resources constrain the functioning of statistical learning, narrowing the range of what can be learned.     

Guidelines for classifying evidence-based treatments in couple and family therapy

Guidelines for Evidence-Based Treatments in Family Therapy are intended to help guide clinicians, researchers, and policy makers in identifying specific clinical interventions and treatment programs for couples and families that have scientifically based evidence to support their efficacy. In contrast to criteria, which simply identify treatments that "work" and have been employed in the evaluation of other psychotherapies, these guidelines propose a three-tiered levels-of-evidence-based model that moves from "evidence-informed," to "evidence-based," to "evidence-based and ready for dissemination and transportation within diverse community settings." Each level reflects an interaction between the specificity of the intervention, the strength and readth of the outcomes, and the quality of the studies that form the evidence. These guidelines uniquely promote a clinically based "matrix" approach in which the empirical support is evaluated according to various dimensions including strength of the outcomes, the applicability across cultural contexts, and demonstration of specific change mechanisms. The guidelines are offered not only as a basis for understanding the evidence for diverse clinical approaches in couple and family therapy within the systemic tradition of the field, but also as an alternative aspirational model for evaluating all psychotherapies.     

Performance benefits of depression: sequential decision making in a healthy sample and a clinically depressed sample

Previous research reported conflicting results concerning the influence of depression on cognitive task performance. Whereas some studies reported that depression enhances performance, other studies reported negative or null effects. These discrepant findings appear to result from task variation, as well as the severity and treatment status of participant depression. To better understand these moderating factors, we study the performance of individuals-in a complex sequential decision task similar to the secretary problem-who are nondepressed, depressed, and recovering from a major depressive episode. We find that depressed individuals perform better than do nondepressed individuals. Formal modeling of participants' decision strategies suggested that acutely depressed participants had higher thresholds for accepting options and made better choices than either healthy participants or those recovering from depression.     

Relationships of role stressors with organizational citizenship behavior: a meta-analysis

Several quantitative reviews have documented the negative relationships that role stressors have with task performance. Surprisingly, much less attention has been directed at the impact of role stressors on other aspects of job performance, such as organizational citizenship behavior (OCB). The goal of this study was to therefore estimate the overall relationships of role stressors (i.e., role ambiguity, conflict, and overload) with OCB. A meta-analysis of 42 existing studies indicated that role ambiguity and role conflict were negatively related to OCB and that these relationships were moderated by the target of OCB, type of organization, OCB rating source, and publication status. As expected, role conflict had a stronger negative relationship with OCB than it did with task performance. Finally, we found support for a path model in which job satisfaction mediated relationships of role stressors with OCB and for a positive direct relationship between role overload and OCB.     

Proper function and defeating experiences

Jonathan Kvanvig has argued that what he terms “doxastic” theories of epistemic justification fail to account for certain epistemic features having to do with evidence. I’m going to give an argument roughly along these lines, but I’m going to focus specifically on proper function theories of justification or warrant. In particular, I’ll focus on Michael Bergmann’s recent proper function account of justification, though the argument applies also to Alvin Plantinga’s proper function account of warrant. The epistemic features I’m concerned about are experiences that should generate a believed defeater but don’t. I’ll argue that proper functionalism as it stands cannot account for the epistemic effects of these defeating experiences—or, at least, that it can only do so by embracing a deeply implausible view of our cognitive faculties. I’ll conclude by arguing that the only plausible option Bergmann has for modifying his theory undercuts the consideration that motivates proper functionalism in the first place.     

RETRACTED ARTICLE: Happiness as alchemy: Positive mood leads to self-serving responses to social comparisons

People in a positive mood process information in ways that reinforce and maintain this positive mood. The current studies examine how positive mood influences responses to social comparisons and demonstrates that people in a positive mood interpret ambiguous information about comparison others in self-benefitting ways. Specifically, four experiments demonstrate that compared to negative mood or neutral mood participants, participants in a positive mood engage in effortful re-interpretations of ambiguously similar comparison targets so that they may assimilate to upward comparison targets and contrast from downward comparison targets.     

Eye movements during language-mediated visual search reveal a strong link between overt visual attention and lexical processing in 36-month-olds

The nature of children’s early lexical processing was investigated by asking what information 36-month-olds access and use when instructed to find a known but absent referent. Children readily retrieved stored knowledge about characteristic color, i.e., when asked to find an object with a typical color (e.g., strawberry), children tended to fixate more upon an object that had the same (e.g., red plane) as opposed to a different (e.g., yellow plane) color. They did so regardless of the fact that they had plenty of time to recognize the pictures for what they are, i.e., planes and not strawberries. These data represent the first demonstration that language-mediated shifts of overt attention in young children can be driven by individual stored visual attributes of known words that mismatch on most other dimensions. The finding suggests that lexical processing and overt attention are strongly linked from an early age.     

The Multidimensional Nature of Continuance Commitment: Commitment Owing to Economic Exchanges Versus Lack of Employment Alternatives

Purpose  

The purpose of this investigation was to develop a multidimensional measure of continuance organizational commitment, specifying dimensions for continuance commitment based on the perception of beneficial economic exchanges versus the perception of low job alternatives.     

Negative transfer in human associative learning

Models of attentional allocation in associative learning are typically structured according to one of two guiding principles: the predictiveness principle, which posits that attention is paid to cues that have reliably predicted an outcome in the past, or the uncertainty principle, which states that attention is paid to cues about which little is known. Both principles are well supported by studies of animals. However, in studies of human learning, there is very little direct empirical support for the uncertainty principle. In the study reported here, we addressed this gap by investigating negative transfer, a phenomenon that may provide unique support for the uncertainty principle. In two human learning experiments using an allergist task, we replicated the primary findings of previous research on animal learning. We believe that these data provide the first direct evidence for the uncertainty principle in human associative learning.     

Comparing fixed‐amount and progressive‐amount DRO Schedules for tic suppression in youth with chronic tic disorders

Chronic tic disorders (CTDs) involve motor and/or vocal tics that often cause substantial distress and impairment. Differential reinforcement of other behavior (DRO) schedules of reinforcement produce robust, but incomplete, reductions in tic frequency in youth with CTDs; however, a more robust reduction may be needed to affect durable clinical change. Standard, fixed‐amount DRO schedules have not commonly yielded such reductions, so we evaluated a novel, progressive‐amount DRO schedule, based on its ability to facilitate sustained abstinence from functionally similar behaviors. Five youth with CTDs were exposed to periods of baseline, fixed‐amount DRO (DRO‐F), and progressive‐amount DRO (DRO‐P). Both DRO schedules produced decreases in tic rate and increases in intertic interval duration, but no systematic differences were seen between the two schedules on any dimension of tic occurrence. The DRO‐F schedule was generally preferred to the DRO‐P schedule. Possible procedural improvements and other future directions are discussed.