The Directed Forgetting Effect in Word-fragment Completion: An Application of the Process Dissociation Procedure

In three experiments, subjects were asked to remember and forget study words. In line with previous studies, a directed forgetting effect was observed in a word-fragment completion task: Instructions to remember increased the completion of target fragments compared with instructions to forget (Experiment 1). Using the process dissociation procedure (Jacoby, 1991), it appeared that instructions to remember increased the estimates of intentional influences of memory but did not affect the estimates of automatic uses of memory (Experiments 1, 2 and 3). This suggests that directed forgetting effects in word-fragment completion reflect the surreptitious influence of explicit memory in a nominally implicit memory task. However, a meta-analysis indicated that directed forgetting instructions affected automatic and intentional influences of memory in opposite directions. This finding casts doubt on the assumption of independence between automatic and intentional uses of memory. The implications for use of the process dissociation procedure are discussed.     

Machiavellianism in long‐term relationships: Competition,mate retention and sexual coercion

Machiavellianism is characterized by a manipulative interpersonal style and willingness to exploit others (Christie & Geis, 1970). Though previous research has focused on the influence of Machiavellianism in short‐term relationships, Machiavellianism may also influence behavior within long‐term committed romantic relationships. Heterosexual men (N = 93) and women (N = 141) in current romantic relationships of at least 12 months duration were recruited online. Participants completed Machiavellianism, Intra‐Sexual Competition, Mate Retention and Sexual Coercion scales. Regression analyses revealed that those with high levels of Machiavellianism were more likely to compete with same‐sex rivals, directly guard a mate and employ inter‐sexual or intra‐sexual negative inducements as a form of mate retention than those with low levels of the personality trait. Gender did not moderate the influence of Machiavellianism on these behaviors. Findings highlight the influence of Machiavellianism within long‐term committed romantic relationships.     

Diminished testing benefits in young adults with attention-deficit hyperactivity disorder

Memory retrieval has been shown to enhance the long-term retention of tested material; however, recent research suggests that limiting attention during retrieval can decrease the benefits of testing memory. The present study examined whether testing benefits are reduced in young adults with attention-deficit hyperactivity disorder (ADHD). College students with and without ADHD read three short prose passages, each followed by a free recall test, a restudy period or a distractor task. Two days later participants recalled the passages. Although participants without ADHD did not show a significant benefit of testing over restudying, testing did produce recall benefits relative to not taking a test. These testing benefits were diminished in participants with ADHD, who did not show any advantage of testing over either restudying or no test. The absence of testing benefits in the ADHD group is likely due in part to decreased recall on the initial test. These findings have implications for improving educational practices among individuals with ADHD and also speak to the need to examine individual differences in the effectiveness of testing as a learning strategy.     

Aggression and psychopathology in adolescents with a preference for violent electronic games

Associations between a preference for violent electronic games and adolescents’ self‐perceptions of problem behaviors and emotions were examined. It was predicted that a preference for violent games would be associated with negative externalizing characteristics, in particular aggressive emotions and behaviors, on the Youth Self‐Report (YSR), a standardized self‐report measure of adolescent problem behaviors. Thirty‐two 11‐ through 15‐year‐olds (17 girls) listed and categorized favorite electronic games into one of six predetermined categories and completed the YSR. MANOVA revealed significant relationships between a preference for violent games and the Thought Problems subscale (P < .01) and YSR Total Score (P < .05), with trends noted for the Internalizing (P < .06) and Anxious‐Depressed (P < .08) subscales. Expected relationships with externalizing behaviors, including aggression, were not found. However, across all YSR subscales, children with higher preference for violent games had more clinically significant elevations than those with low preference for violent games. On the Total Problems subscale, of the eight children receiving scores in the clinically significant range, six were in the High preference group (three boys and three girls). The failure to find the expected relationships between a preference for violent games and aggressive, externalizing behaviors is puzzling. It is possible that individuals with a preference for violent games may have high exposure to all forms of media violence. Their perceptions of their own behavior, in comparison, may not seem sufficiently aggressive to justify endorsement of problems in this area. Or, playing violent electronic games may promote a disconnection between the emotions normally associated with violence and violent acts. These explanations are consistent with a desensitization model where exposure to media violence decreases sensitivity to aggression. Aggr. Behav. 28:134–144, 2002. © 2002 Wiley‐Liss, Inc.     

Imaginary relish and exquisite torture: the elaborated intrusion theory of desire

The authors argue that human desire involves conscious cognition that has strong affective connotation and is potentially involved in the determination of appetitive behavior rather than being epiphenomenal to it. Intrusive thoughts about appetitive targets are triggered automatically by external or physiological cues and by cognitive associates. When intrusions elicit significant pleasure or relief, cognitive elaboration usually ensues. Elaboration competes with concurrent cognitive tasks through retrieval of target-related information and its retention in working memory. Sensory images are especially important products of intrusion and elaboration because they simulate the sensory and emotional qualities of target acquisition. Desire images are momentarily rewarding but amplify awareness of somatic and emotional deficits. Effects of desires on behavior are moderated by competing incentives, target availability, and skills. The theory provides a coherent account of existing data and suggests new directions for research and treatment.     

Intrusive and non-intrusive memories in a non-clinical sample: the effects of mood and affect on imagery vividness

We studied the number, valence, and vividness of intrusive and non-intrusive memories in two groups (N = 20) of pre-screened non-depressed mood and depressed mood undergraduate participants. They were asked to generate as many intrusive memories (IMs) as possible from the prior 2 weeks, together with pleasant and unpleasant non-intrusive memories from the same period. They subsequently formed images of these memories and rated them on measures of vividness, valence, arousal, and overall affect, while having their heart rate, skin conductance, and electromyogram monitored. IMs were common, with participants generating a mean of 1.15 pleasant IMs and 1.60 unpleasant IMs, and there was some evidence that they were mood-congruent. IMs were more vivid than non-intrusive memories, a difference not due to either valence or arousal. We conclude that IMs are a general feature of human memory rather than just a symptom of certain clinical disorders.     

Determinants of the vividness of visual imagery: the effects of delayed recall, stimulus affect and individual differences

This study investigated the influence of emotion on vividness of imagery. A total of 80 undergraduate participants saw 25 pictures from the International Affective Picture System, representing different dimensions of valence and arousal. They rated each stimulus for valence, arousal, and emotionality. Each stimulus was then presented again, and participants formed an image of it, rating the image for vividness, valence, arousal, and emotionality. During a 15-minute retention interval, participants completed several individual differences questionnaires. They then recalled each image from a verbal prompt and re-rated its quality. Slides rated as extremely valenced and highly arousing were more vividly imaged than neutral slides. Low mood was also associated with more vivid imagery. The influence of stimulus variables was greater in the immediate imagery phase; that of individual differences tended to be greater in the delayed imagery phase. Of 29 participants, 7 reported intrusive memories of highly unpleasant stimuli at 1 year follow-up.