The social function of imitation in severe dementia

We report the case of Jessie, an individual with severe Alzheimer's disease. Over two sessions, we examine Jessie's spontaneous conversation behaviour and urge to communicate using the ‘still face’ paradigm. Spontaneous and deliberate imitation are also examined to identify their importance in social interactions in severe dementia. Although Jessie has difficulty producing meaningful conversation, she retains the urge to communicate and participate in social interactions. These results confirm the importance of imitation in facilitating and maintaining people with communication problems in the social world. Copyright © 2006 John Wiley & Sons, Ltd.     

Age of acquisition affects object recognition: evidence from visual duration thresholds

The impact of age of acquisition (AoA) on object recognition was explored in three experiments measuring visual duration threshold (VDT) for the identification of pictures labelled with early and late acquired names. Participants viewed briefly displayed images preceded and followed by a pattern mask. The minimum display duration required for correct identification was shorter for pictures labelled with early names than for those labelled with late names. In Experiments 2 and 3 we explored the effects of two forms of visual degradation on VDT for pictures with early and late acquired names. Both degradation by superimposed visual elements, and degradation by contrast reduction extended VDT, but only the former interacted with AoA. We conclude that both AoA and degradation by superimposed visual elements affect the efficiency of visual object recognition, but only degradation by contrast and not AoA affects the efficiency of earlier pre-recognition processes.     

Do IRBs Pass the Minimal Harm Test?

ABSTRACT— We describe examples of institutional review board (IRB) actions that have delayed or thwarted research that could not conceivably be considered to pose more than minimal risk to participants. We propose three changes to improve the IRB process and reduce both human and financial costs.     

Age of acquisition affects early orthographic processing during Chinese character recognition

Three experiments investigated age of acquisition (AoA) effects on early orthographic processing during Chinese character recognition. In Experiment 1, we measured the accuracy of identification of brief masked characters, accuracy was higher for early compared to late acquired characters. In Experiment 2, the visual duration threshold (VDT) was measured for both early and late acquired Chinese characters. The results showed that early acquired characters were successfully identified at shorter display durations than late acquired characters. Significant AoA effects were also found in Experiment 3, using a lexical decision task requiring mainly orthographic processing (discriminating real Chinese characters from orthographically illegal and unpronounceable characters). In summary, three experiments provide converging empirical evidence, for AoA effects on the early orthographic processing stages of Chinese character recognition. These results suggest that AoA effects during word identification go beyond the phonological or semantic processing stages. These results aslo provide cross-linguistic evidence for an AoA effect on early perceptual processing during identification.     

Adult attachment, perceived stress, and PTSD among civilians exposed to ongoing terrorist attacks in Southern Israel

This study examined the relationships among exposure to terrorism, individual differences in adult attachment dimensions, perceived stress, and posttraumatic stress disorder (PTSD). A representative sample of 254 adults who had experienced more than 7 years of ongoing exposure (OGE) to rocket and mortar fire in southern Israel was compared to 308 individuals with no exposure (NE) to terrorism. OGE individuals reported significantly elevated levels of insecure attachment, perceived stress, and PTSD-symptoms as compared to the NE individuals. The associations between perceived stress and PTSD-symptoms were significantly stronger in the OGE group, compared to the NE group. For OGE individuals, the elevated level of perceived stress mediated the association between Attachment Anxiety and PTSD-symptoms. Theoretical and clinical implications of the findings are discussed.     

Counselling breast cancer patients: A specialist nurse service

The evaluation of a specialist nurse-counselling service is described. Forty newly diagnosed breast cancer patients, treated by mastectomy, were randomised to receive either routine care or routine care plus counselling by a nurse. Psychological morbidity was assessed at one week, 3 months and 12 months postoperatively to determine the efficacy of this service. Comparisons between the groups indicated that counselled patients were significantly less depressed at 3 months postoperatively and reported more beliefs in personal control over health. At 12 months postoperatively there were no significant differences between the groups. Although both groups continued to adjust throughout the year following surgery, this adjustment occurred more rapidly if patients were counselled. The results suggest that a nurse-counselling service can be of value in helping to reduce the amount of distress experienced as a result of the diagnosis and treatment of breast cancer.     

Adolescent Nonsmokers,Triers, and Regular Smokers' Estimates of Cigarette Smoking Prevalence: When Do Overestimations Occur and by Whom?1

The present study tested three assumptions often made by smoking prevention researchers and practitioners regarding the nature and causes of smoking prevalence estimates. Specifically, it is often assumed that (a) adolescent prevalence estimates of all levels of smoking are inflated, (b) youths at different stages of smoking onset all overestimate smoking prevalence, and (c) the predictors of these estimates are the same for youths at different stages of smoking onset. Measures of smoking behavior based on self-reports using a bogus pipeline procedure, estimates of cigarette smoking prevalence (trying behavior and weekly use), and reports of smoking in significant others were obtained by the same youths when they were in eighth and ninth grades. Results indicated that, taken over all youths, estimates of trying cigarettes were accurate, whereas estimates of weekly use were inflated. When responders were defined by their stage of smoking onset, either as a nonsmoker, trier, or regular smoker, analyses revealed that triers were accurate regarding prevalence estimates of trying, whereas non-smokers made gross underestimations and regular smokers made overestimations of trying. All groups of youths overestimated prevalence of weekly smoking. Analyses of variance revealed that both youths' smoking status and interpersonal smoking environment additively predicted prevalence estimates, and estimates of smoking prevalence were relatively higher in youths who began to smoke, or increased their levels of smoking, within the next year. Thus, previous assumptions were partially confirmed. Future research and prevention programming should focus more on regular smoking as the focus of normative smoking distortion effects and correction efforts.     

Psychosocial Predictors of Young Adolescent Cigarette Smoking: A Sixteen-Month,Three-Wave Longitudinal Study1

Understanding the psychosocial factors that predict cigarette smoking onset in young people is of crucial importance for prevention efforts. The present study examined prospective psychosocial predictors of smoking in a three-wave longitudinal data set. Similar in design to an earlier study by Chassin, Presson, Sherman, Corty, and Olshavsky (1984), the present study replicated their work, and extended it by (a) using composite predictors derived from exploratory factor analysis, (b) including prior behavior as a predictor, (c) using a design extended over three waves of data collection, and (d) using a sample composed primarily of urban teenagers. Subjects were 3295 7th-grade students at the beginning of the study. The subjects completed a questionnaire containing items tapping cigarette smoking behavior and psychosocial items that have previously been shown to predict smoking behavior. Forty-one psychosocial items on the Wave 1 (initial) questionnaire were factor analyzed, and five factors were retained. Subscale scores were constructed based on these factors and were used as predictors. Regression analyses were performed using the subscales and pretest smoking frequency to predict a continuous measure of smoking, and discriminant analyses were performed to predict transitions between qualitative levels of smoking. Prior smoking behavior was the most important predictor of future smoking. Four of the subscales, Social Disapproval, Risk Taking/Rebelliousness, Perceived Smoking Prevalence, and Motivation to Comply, were significant predictors. One subscale, Physical Consequences from Smoking, was not predictive of smoking in any of the analyses. The effect sizes cross-validated well. It is suggested that an integrative model of smoking initiation developed by Flay, d'Avernas, Best, Kersell, and Ryan (1983) best summarizes the results of the present study.