Sequential difficulty effects during strategy execution

In two experiments, we tested the hypothesis that strategy performance on a given trial is influenced by the difficulty of the strategy executed on the immediately preceding trial, an effect that we call strategy sequential difficulty effect. Participants' task was to provide approximate sums to two-digit addition problems by using cued rounding strategies. Results showed that performance was poorer after a difficult strategy than after an easy strategy. Our results have important theoretical and empirical implications for computational models of strategy choices and for furthering our understanding of strategic variations in arithmetic as well as in human cognition in general.     

Friend influence over adolescent problem behaviors as a function of relative peer acceptance: to be liked is to be emulated

Friend influence over alcohol intoxication and delinquent behavior was examined as a function of relative peer acceptance in a 3-year study of Swedish youth (N = 184 girls, 145 boys). Participants were in the first year of secondary school (7th grade, M = 11.7 years old) or the first year of high school (10th grade, M = 15.3 years old) at the outset. Friends resembled one another before the friendship; resemblances were even greater after the friendship began. Resemblances continued to grow among those who remained friends one year later, but declined among those whose friendships dissolved. Partners were not equally responsible for increases in similarity. In stable friendships, the more accepted partner exerted greater influence over the less accepted partner, such that the greatest increases in problem behaviors were found among less accepted youth whose friends had higher initial levels of delinquency and alcohol intoxication. Unstable friends resembled random pairs of youth in that more- and less-accepted partners were comparably uninfluential.     

Mind the gap: assessing impairment among children affected by proposed revisions to the diagnostic criteria for oppositional defiant disorder

The Diagnostic and Statistical Manual for Mental Disorders, Fifth Edition (DSM-5) workgroup for disruptive behavior disorders is considering adopting a frequency threshold for symptoms of oppositional defiant disorder (ODD). In the present study, the impact of substituting the term "often" with a specific age-based frequency on impairment and prognosis among preschool children was tested in a longitudinal design. Mutually exclusive groups were created to identify children who met criteria for ODD based on a symptom threshold of "often," as in Diagnostic and Statistical Manual for Mental Disorders, Fourth Edition (DSM-4), and those that met criteria for ODD based on a threshold of "1-2 times per day," which approximated the proposal for DSM-5. Comparisons of these groups to each other and to nondiagnosed peers determined the impact of changing the symptom threshold on impairment and prognosis. Close to one-third of children who met DSM-4 criteria for ODD did not meet criteria under the alternative diagnosis; African American children were overrepresented in this group. Preschoolers who met DSM-4, but not the alternative criteria, had higher rates of ODD, conduct disorder (CD), and were more impaired than their nondiagnosed peers at baseline and follow-up. Preschoolers meeting DSM-4 criteria were less impaired than children meeting the alternative ODD criteria at baseline according to parent, but not according to teacher report. No differences could be detected between those meeting DSM-4 and those meeting the alternative criteria in rate of ODD, CD, or impairment at follow-up. Among clinically referred preschool children, changing the symptom threshold for ODD could result in a sizable group of children who would no longer meet diagnostic criteria, despite demonstrating significant morbidity concurrently and prospectively.     

'To Paint the Portrait of a Bird': analytic work from the perspective of a 'developmental' Jungian

Jungians who are trained in the so-called 'Developmental School' straddle the two worlds of psychoanalysis and classical Jungian thinking. This is not always an easy position in which to be, but if the tensions can be held it is potentially a rich and creative way of working. In this paper I attempt to explore this position using the poem, 'To Paint the Portrait of a Bird' by Jacques Prévert as a metaphor for the analytic endeavour. From this perspective I hope to illustrate the importance of being able on the one hand to hold and maintain a clear frame for the careful and detailed exploration of the transference within which the more malign aspects of the psyche might be expressed, and, on the other, to allow the alchemical process of mutual transformation that lies outside the conscious understanding of the analytic couple.     

Enhanced recognition and recall of new words in 7- and 12-year-olds following a period of offline consolidation

Recent studies of adults have found evidence for consolidation effects in the acquisition of novel words, but little is known about whether such effects are found developmentally. In two experiments, we familiarized children with novel nonwords (e.g., biscal) and tested their recognition and recall of these items. In Experiment 1, 7-year-olds were then retested on either the same day or the following day to examine changes in performance after a short delay compared with a longer delay that included sleep. Experiment 2 used two age groups (7- and 12-year-olds), with all participants being retested 24h later. The 12-year-olds accurately recognized the novel nonwords immediately after exposure, as did the 7-year-olds in Experiment 2 (but not in Experiment 1), suggesting generally good initial rates of learning. Experiment 1 revealed improved recognition of the novel nonwords after both short (3- to 4-h) and longer (24-h) delays. In contrast, recall was initially poor but showed improvements only when children were retested 24h later, not after a 3- to 4-h delay. Similar improvements were observed in both age groups despite better overall performance in 12-year-olds. We argue that children, like adults, exhibit offline consolidation effects on the formation of novel phonological representations.     

Children show heightened memory for threatening social actions

Three experiments investigated whether a negativity bias in social perception extends to preschool-aged children's memory for the details of others' social actions and experiences. After learning about individuals who committed nice or mean social actions, children in Experiment 1 were more accurate at remembering who was mean compared with who was nice. In Experiment 2, children showed a memory advantage for the specific details of actions committed by mean individuals compared with nice individuals. In Experiment 3, children exhibited better memory for the details of mean actions compared with nice actions when the vignettes were presented from the perspective of the recipients instead of the perpetrators of these actions. Taken together, these findings suggest that children show heightened memory for the details of negative social actions over positive social actions. Such a memory bias may be advantageous in helping children to predict potentially threatening situations in the future.     

Characteristics of serial order learning in common marmosets (Callithrix jacchus)

We investigated the characteristics of serial order learning in common marmosets (Callithrix jacchus). Five marmosets were trained in a sequential responding task in which they were required to touch four graphic patterns in a given order (A→B→C→D) to obtain a reward. All five marmosets learned the task with over 65% accuracy. Shuffling the positions of B, C, and D immediately after the marmoset had correctly identified and selected the first stimulus (A) either decreased accuracy or lengthened response latency for the second stimulus (B). These results suggest that the marmosets planned the response to the second stimulus before they touched the first stimulus. In addition, when we presented a pair of stimuli (AB, AC, AD, BC, BD, and CD pairs), the marmosets responded to the stimuli in the pair in the appropriate order, according to the learned order (A→B→C→D). The analyses of first and second response latencies clearly demonstrated both the first-item and missing-item effects in task performance. Our data provide direct evidence that marmosets can learn the relative order of the four stimuli in a sequential responding task. (PsycINFO Database Record (c) 2012 APA, all rights reserved).     

How do alternative ways of responding influence 3- and 4-year-olds’ performance on tests of executive function and theory of mind?

A total of 69 preschool children were tested on measures of false belief understanding (the Unexpected Transfer task), inhibitory control (the Grass/Snow task), and strategic reasoning (the Windows task). For each task, children indicated their response either by pointing with their index finger or by using a nonstandard response mode (pointing with a rotating arrow). The means of responding had no effect on children's performance on the Grass/Snow task or on the Unexpected Transfer task, although children performed better on the Unexpected Transfer task when the key object in the story was removed. In contrast, performance on the Windows task was significantly better when children pointed with the rotating arrow. A follow-up experiment with 79 preschoolers found that this improved performance on the Windows task was sustained even after the nonstandard response mode was removed and children again pointed with their finger. These findings together suggest that nonstandard response modes do not help children to inhibit prepotent pointing responses but may help them to formulate response strategies on reasoning tasks by discouraging unreflective impulsive responding.     

Young children can tell strategic lies after committing a transgression

This study investigated whether young children make strategic decisions about whether to lie to conceal a transgression based on the lie recipient's knowledge. In Experiment 1, 168 3- to 5-year-olds were asked not to peek at the toy in the experimenter's absence, and the majority of children peeked. Children were questioned about their transgression in either the presence or absence of an eyewitness of their transgression. Whereas 4- and 5-year-olds were able to adjust their decisions of whether to lie based on the presence or absence of the eyewitness, 3-year-olds did not. Experiments 2 and 3 manipulated whether the lie recipient appeared to have learned information about children's peeking from an eyewitness or was merely bluffing. Results revealed that when the lie recipient appeared to be genuinely knowledgeable about their transgression, even 3-year-olds were significantly less likely to lie compared with when the lie recipient appeared to be bluffing. Thus, preschool children are able to make strategic decisions about whether to lie or tell the truth based on whether the lie recipient is genuinely knowledgeable about the true state of affairs.     

The long, steep path to equality: progressing on egalitarian goals

The present research examined the impact that perceived progress on egalitarian goals had on subsequent racial bias. In particular, a new bogus pipeline procedure was used to provide feedback to participants that they were becoming incrementally more egalitarian. The impact of this information on intergroup behavior and attitudes was tested. In particular, we looked at the effect of goal feedback on outgroup discrimination and ingroup favoritism, as well as implicit racial attitudes. Three studies found that participants demonstrated greater racial bias after receiving feedback that they were progressing on egalitarian goals versus either feedback that they were failing on egalitarian goals or no feedback. Specifically, participants who were told that they were progressively becoming more egalitarian sat farther away from Blacks and closer to Whites and demonstrated greater implicit racial prejudice. The implication of these findings for current theories on prejudice, intergroup relations, and social goals are discussed.