The distinctiveness heuristic in false recognition and false recall

The effects of generative processing on false recognition and recall were examined in four experiments using the Deese-Roediger-McDermott false memory paradigm (Deese, 1959 Deese, J. 1959. On the prediction of occurrence of particular verbal intrusions in immediate recall. Journal of Experimental Psychology, 58: 17–22. [Crossref], [PubMed] , [Google Scholar]; Roediger & McDermott, 1995 Roediger, H. L. and McDermott, K. B. 1995. Creating false memories: Remembering words not presented in lists. Journal of Experimental Psychology: Learning, Memory, and Cognition, 21: 803–814. [Crossref], [Web of Science ®] , [Google Scholar]). In each experiment, a Generate condition in which subjects generated studied words from audio anagrams was compared to a Control condition in which subjects simply listened to studied words presented normally. Rates of false recognition and false recall were lower for critical lures associated with generated lists, than for critical lures associated with control lists, but only in between-subjects designs. False recall and recognition did not differ when generate and control conditions were manipulated within-subjects. This pattern of results is consistent with the distinctiveness heuristic (Schacter, Israel, & Racine, 1999 Schacter, D. L., Israel, L. and Racine, C. 1999. Suppressing false recognition in younger and older adults: The distinctiveness heuristic. Journal of Memory and Language, 40: 1–24. [Crossref], [Web of Science ®] , [Google Scholar]), a metamemorial decision-based strategy whereby global changes in decision criteria lead to reductions of false memories. This retrieval-based monitoring mechanism appears to operate in a similar fashion in reducing false recognition and false recall.     

Working Memory for Item and Temporal Information in Younger and Older Adults

ABSTRACT

Two experiments examined age differences in mechanisms hypothesized to affect activation of item and temporal information in working memory. Activation levels were inferred from the ability to reject n-back lures matching items in different temporal positions. Information with the least decay had a performance advantage over less recent information, but was susceptible to the same temporal context errors found in all adjacent-to-target lure positions. Lures most distant from the current item showed a performance rebound. The pattern of increased magnitudes of age effects at adjacent-to-target positions indicated a reduction in older adults' working memory for temporal context information above and beyond item memory declines. Results overall support the emphasis on context information as a critical factor in working memory and cognitive aging.     

Accuracy of body size estimation: Role of biopsychosocial variables

This study evaluated factors related to the perceptual disturbances of body image. Using a digital body image computer program, 191 participants (107 women, 82 men) adjusted an image of their body to the perceived actual size at five body regions; chest, waist, hips, thighs and calves. A neutral object (a vase) was also adjusted to partial out the level of perceptual distortion present with a neutral object. Men and women overestimated the size of the neutral object and their body image. Among women, overestimation was primarily predicted by high levels of depression, and media and peer influences to be thinner and increase muscles. Among men, overestimation was predicted by high BMI, media influences to lose weight and increase muscles, and peer influences to increase muscles. These findings suggest that perceptual accuracy of body image is primarily predicted by biopsychosocial influences.     

The effect of warnings on false memories in young and older adults

In the present experiments, we examined adult age differences in the ability to suppress false memories, using the Deese-Roediger-McDermott (DRM) paradigm (Deese, 1959; Roediger & McDermott, 1995). Participants studied lists of words (e.g., bed, rest, awake, etc.), each related to a nonpresented critical lure word (e.g., sleep). Typically, recognition tests reveal false alarms to critical lures at rates comparable to those for hits for studied words. In two experiments, separate groups of young and older adults were unwarned about the false memory effect, warned before studying the lists, or warned after study and before test. Lists were presented at either a slow rate (4 sec/word) or a faster rate (2 sec/word). Young adults were better able to discriminate between studied words and critical lures when warned about the DRM effect either before study or after study but before retrieval, and their performance improved with a slower presentation rate. Older adults were able to discriminate between studied words and critical lures when given warnings before study, but not when given warnings after study but before retrieval. Performance on a working memory capacity measure predicted false recognition following study and retrieval warnings. The results suggest that effective use of warnings to reduce false memories is contingent on the quality and type of encoded information, as well as on whether that information is accessed at retrieval. Furthermore, discriminating between similar sources of activation is dependent on working memory capacity, which declines with advancing age.     

Media influences on body image and disordered eating among indigenous adolescent Australians

There has been no previous investigation of body image concerns and body change strategies among indigenous Australians. This study was designed to investigate the level of body satisfaction, body change strategies, and perceived media messages about body change strategies among 50 indigenous (25 males, 25 females) and 50 non-indigenous (25 males, 25 females) Australian adolescents (mean age 14.05, SD = 1.05). Consistent with past studies, girls were more likely to be dissatisfied with their weight and engage in strategies to lose weight. However, contrary to expectations, indigenous adolescents engaged in more strategies to lose weight, increase weight, and increase muscles than did non-indigenous adolescents, despite perceiving fewer media messages about losing weight. Additional factors that may explain the findings and the need for further research with different cultural groups are highlighted.     

Effect of distraction and coping style on in vivo exposure for specific phobia of spiders

Recent studies have generated mixed findings regarding the effects of distraction on exposure-based treatments. Results have also been inconsistent regarding the effects of monitoring and blunting coping styles on outcome. The present study attempted to integrate these two areas of research. We hypothesized that the effect of distraction on treatment outcome might depend on coping style. Specifically, we predicted that for blunters (i.e.. individuals who tend to avoid threat-related information), distraction would interfere with the effects of exposure. However, we predicted that distraction might benefit monitors (i.e., individuals who tend to seek out threat-related information). Sixty individuals with a specific phobia of spiders underwent a single, two-hour session of exposure treatment. During the first hour, half of the participants were distracted by listening to an audiotape and the other half underwent exposure without distraction. In the second hour, all participants underwent focused exposure. Based on measures of heart rate, subjective fear, and behavioral testing, participants improved after one hour of treatment, and improved further during the second hour. However, neither distraction, coping style, nor their interaction had a significant effect on outcome. The present study provides support for the benefits of behavioral treatment for specific phobias. However, our hypotheses regarding distraction and coping style were not confirmed.     

The structure ofAND coordinations in children's narratives

Narratives of 3 1/2-to 9 1/2-year-old children were searched for AND coordinations. Only half of the AND utterances of the youngest compared to four-fifths of those of the oldest children were fully formed, syntactically correct coordinations. The latter were classified as phrasal coordinations, redundant sententials (i.e., potential phrasals), or nonredundant sentential coordinations. Sentential coordinations predominated, especially among older children. Direction of redundancy (or potential redundancy) was important: forward forms predominated over backward forms. Differences in form of the children's coordinations often reflected differences in meaning; this was true for backward direction forms of phrasal versus sentential coordination, although not for most forward direction forms.The authors would like to thank Michael Bruce-Lockhart for the development and use of the NARRAN software package. For more information about NARRAN or its availability, write to the first author. This research was supported by National Science and Engineering Research Council grant A-0513 to the first author.     

Understanding “because”: How important is the task?

The causal connective because requires the order of clauses within a sentence to violate the order of events in the real world; i.e., effect because cause is correct. Children's (4, 6, and 8 years of age) ability to comprehend because was explored in a series of four studies. The first, a replication with variations of existing studies, assessed children's ability to judge as anomalous sentences in which the order of clauses is reversed. Comprehension of impersonal sentences is better than of sentences derived from narratives of their own experiences, although children do poorly at this task until age 8. However, results of study 2 suggest that children's poor understanding of task requirements is partly responsible, since increased task instructions and modeling led to significant improvement in the ability of preschoolers to judge sentences as anomalous. In the third study, children named the cause event after being told a causal sequence (involving either psychological or physical causality) of the form: Event A, Event C (effect) because Event B (cause), Event D. Comprehension of physical causality sequences is superior, but again, only 8-year-olds showed good performance. In Study 4, children were asked to find the cause event in four-clause sequences of the same form as in Study 3, but memory props were added in the form of pictures of events A, B, and D. Near perfect performance was shown by all children. Overall, comprehension studies of because are judged to be rife with methodological problems, and memory demands are seen to be particularly important.The authors wish to thank Lynn Anne Pye for her contributions to Study 4, which formed part of her undergraduate honors degree research, as well as F. Michael Rabinowitz for his comments and statistical aid. This research was supported by NSERC grant A7911 to the senior author.     

Factorial validity of the Bulimia Test-Revised in adolescent boys and girls.

The present study examined the psychometric properties and principal components structure of the Bulimia Test Revised (BULIT-R; [Thelen, M.H., Farmer, J., Wonderlich, S. & Smith, M. (1991). A revision of the Bulimia Test: the BULIT-R. Psychological Assessment, 3, 119-124.]) using a sample of early adolescent males and females. Three hundred and six girls (mean age = 13.66; S.D. = 1.12) and 297 boys (mean age = 13.89: S.D. = 1.13) from grades 7-10 completed the BULIT-R as part of a larger study investigating disordered eating in early adolescence. In comparison to the 5 factors identified in adult female samples, the factor analysis identified four similar factors for adolescent boys and girls: bingeing, control, normative weight loss (dieting and exercise) and extreme weight loss behaviors (vomiting, diuretics and laxatives). The findings highlight similarities between boys and girls and differences in the factorial nature of the BULIT-R for adult and adolescent samples. The BULIT-R also demonstrated good reliability with adolescent samples and adequate concurrent validity with the DFT, DEBQ and binge eating as defined by the DSM-IV criteria. The emergence of bingeing and control as two distinct factors is an important distinction that needs to be considered when attempting to provide accurate incidence rates of binge eating and bulimic symptomatology in adolescents.