Learning What to Remember: Vocabulary Knowledge and Children's Memory for Object Names and Features

Although young children can map a novel name to a novel object, it remains unclear what they actually remember about objects when they initially make such a name–object association. In the current study we investigated (1) what children remembered after they were initially introduced to name–object associations and (2) how their vocabulary size and vocabulary structure influenced what they remembered. As a group, children had difficulty remembering each of the features of the original novel objects. Further analyses revealed that differences in vocabulary structure predicted children's ability to remember object features. Specifically, children who produced many names for categories organized by similarity in shape (e.g. ball, cup) had the best memory for newly‐learned objects' features—especially their shapes. In addition, the more features children remembered, the more likely they were to retain the newly learned name–object associations. Vocabulary size, however, was not predictive of children's feature memory or retention. Taken together, these findings demonstrate that children's existing vocabulary structure, rather than simply vocabulary size, influences what they attend to when encountering a new object and subsequently their ability to remember new name–object associations. Copyright © 2015 John Wiley & Sons, Ltd.     

Biased Facial Expression Interpretation in Shy Children

The relationship between shyness and the interpretations of the facial expressions of others was examined in a sample of 123 children aged 12 to 14 years. Participants viewed faces displaying happiness, fear, anger, disgust, sadness, surprise, as well as a neutral expression, presented on a computer screen. The children identified each expression by pressing a button on an external keyboard. For each expression, children also rated (a) the degree to which they felt the child displaying the expression would like them, (b) the probability that someone at school would look at them with that expression, and (c) their own emotional reaction to interacting with a child displaying the expression. Participants also completed the Children's Shyness Questionnaire and the Children's Rejection Sensitivity Questionnaire. We hypothesized that shyness in children would be related to negatively biased interpretations of facial expressions. Although the accuracy with which the children could identify the facial expressions was not related to their degree of shyness, negative biases were found in their interpretations of the meanings of the expressions. Furthermore, rejection sensitivity significantly mediated many of these biased interpretations. These findings may have implications for interventions for children experiencing shyness and social anxiety, especially social‐skills training approaches. Copyright © 2015 John Wiley & Sons, Ltd.     

The View from Inside the System: How Police Explain Their Response to Sexual Assault

Prior research has documented the problematic community response to sexual assault: the majority of sexual assaults reported to police are never prosecuted. Social dominance theory suggests that this response is a form of institutional discrimination, intended to maintain existing social structures, and that police personnel likely draw upon shared ideologies to justify their decision‐making in sexual assault case investigations. This study drew upon social dominance theory to examine how police justified their investigatory decisions to identify potential leverage points for change. The study revealed that the likelihood of a case referral to the prosecutor increased with each additional investigative step completed; of the different types of justifications provided by police for a less‐than‐thorough investigative response and stalled case, blaming the victim for the poor police investigation proved to be the most damaging to case progression; and the type of explanation provided by police was impacted by specific case variables. As suggested by social dominance theory, the study demonstrates that police rely on several different mechanisms to justify their response to sexual assault; implementing criminal justice system policies that target and interrupt these mechanisms has the potential to improve this response, regardless of specific case factors.     

Performance,incentives, and needs for autonomy,competence, and relatedness: a meta-analysis

Although self-determination theory (SDT) is one of the most widely cited theories of human motivation and function, critics have questioned the practical utility of its three needs (i.e., autonomy, competence, and relatedness) in performance contexts. We conduct a meta-analysis (k = 108, N = 30,648) to explore the magnitude and boundary conditions of need satisfaction and performance. As expected, autonomy (ρ = .28), competence (ρ = .37), and relatedness (ρ = .25) predict performance. Incentivization per se has little impact on need-satisfaction: instead, the need satisfaction → performance relationship is moderated by incentive salience. Consistent with a crowding-out hypothesis, need satisfaction matters less to performance when incentives are directly salient (ρ = .22) and more when indirectly salient (ρ = .45). Our meta-analysis demonstrates that indirectly salient incentives and need-satisfaction are indeed compatible, providing a direct response to criticisms of SDT in performance contexts. Additional unexpected findings and future directions are discussed.     

Anhedonic symptoms of depression are linked to reduced motivation to obtain a reward

People with depression report reduced motivation to obtain a reward and reduced affective responses to reward. However, studies focusing on the relation between anhedonia and deficits in reward processing are scarce. Furthermore, studies investigating wanting through cardiovascular reactivity and liking through facial electromyography in human beings are also scarce. In this study, we used the Temporal Experience of Pleasure Scale score as a continuous predictor variable of anhedonia and we manipulated two within-person conditions (wanting vs. liking). Participants earned money if their performance on a memory task exceeded a particular standard. As expected, effort-related cardiovascular reactivity and self-reports during the anticipatory phase were lower for participants scoring high on anhedonia. Moreover, task performance outcomes were worse for highly anhedonic participants. However, the zygomaticus major muscle’s activity during the consummatory phase was unrelated to the anhedonia score. The present study underlines the importance of anhedonic symptoms, particularly in reduced anticipatory motivation to obtain a reward.     

Practice makes perfect: Training the interpretation of emotional ambiguity

The interpretation of emotionally ambiguous words, sentences, or scenarios can be altered through training procedures that are collectively called cognitive bias modification for interpretation (CBM-I). In three experiments, we systematically manipulated the nature of the training in order to discriminate between emotional priming and ambiguity resolution accounts of training effects. In Experiment 1 participants completed word fragments that were consistently related to either a negative or benign interpretation of an ambiguous sentence. In a subsequent semantic priming task they demonstrated an interpretation bias, in that they were faster to identify relatedness of targets that were associated with the training-congruent meaning of an emotionally ambiguous homograph. We then manipulated the training sentences to show that interpretation bias was eliminated when participants simply completed valenced word fragments following unrelated sentences (Experiment 2), or completed fragments that were related to emotional but unambiguous sentences (Experiment 3). Only when participants were required to actively resolve emotionally ambiguous sentences during training did changes in interpretation emerge at test. Findings suggest that CBM-I achieves its effects by altering a production rule that aids the selection of meaning from emotionally ambiguous alternatives, in line with an ambiguity resolution account.