Expectancy factors in the treatment of fear: Methodological and theoretical issues.

Critically reviews the literature assessing the importance of Ss' expectation of therapeutic gain in facilitating fear reduction. Reviewed studies fall into 2 major categories: those that compare the relative efficacy of systematic desensitization and placebos and those that attempt to manipulate Ss' expectation of therapeutic gain within a particular technique (e.g., systematic desensitization). The methodological problems with this research include the failure of investigators to evaluate the experiential impact of expectancy-inducing instructions, the use of unconvincing placebo manipulations, and the predominant employment of mildly fearful, poorly motivated Ss. In spite of these problems, it is tentatively concluded that expectancy manipulations are important change mediators. Several mechanisms may explain how expectancy mediates change, including increased compliance with real treatment procedures; increased tendency to test reality after having undergone an "effective" therapy, with subsequent fear extinction and self-reinforcement for behavioral improvement; modification of demand characteristics after treatment; and modification of cognitive events controlling fear responding. (71 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Mesograde amnesia during the sleep onset transition: replication and electrophysiological correlates

The present study was designed to explore mechanisms of amnesia for meaningful auditory material presented during the sleep onset transition. Thirty undergraduate subjects (17 female, 13 male) were presented with auditory stimuli in an oddball paradigm until sleep onset. Subjects were allowed to accumulate either 30 seconds or 10 minutes of sleep, then awakened and tested on free recall and recognition memory for the meaningful stimuli. After 10 minutes of sleep, but not after 30 seconds of sleep, subjects had profound amnesia on free recall for stimuli presented in the 4-minute window prior to sleep onset. Increased beta electroencephalograph (EEG) power during the sleep period correlated positively with recall of stimuli in the 4-minute presleep window. Event-related potential recordings provided suggestive evidence that subjects continued to process the auditory stimuli to some extent during the sleep onset transition. When allowed to sleep for 10 minutes, subjects evidenced a mixed anterograde and retrograde amnesia for auditory stimuli presented in the 4-minute window prior to sleep onset. The results are discussed in terms of stimulus encoding, consolidation, and retrieval.     

Expectancies in therapy research: Interpretive artifact or mediating mechanism?

W. Wilkins (see record 1980-01498-001), in his critique of client expectancy, concludes that expectancy is a questionable interpretive artifact for the effectiveness of therapy. The authors disagree with much of Wilkins's analysis, which they say confuses attempts to demonstrate effectiveness with attempts to explore theoretical mechanisms. It is their view that expectancy is a viable alternative explanation for the effectiveness of therapy. Contrary to Wilkins's assertion, it is argued that systematic desensitization, as an exemplar of therapy, has not been demonstrated to be superior to equally credible, observable manipulations of expectancy. Further contributions to treatment technology will require a detailed analysis of how expectancy manipulations mediate improvement. (20 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

A comparison of progressive relaxation and autogenic training as treatments for insomnia.

Evaluated 2 relaxation techniques, progressive relaxation and autogenic training, as treatments for insomnia. No-treatment, a baseline control group, and a self-relaxation group designed to control for nonspecific therapeutic elements were employed. Ss were 30 adult insomniacs who had chronic and severe difficulties in falling asleep. As indicated by global measures of improvement and by reduction in time to fall asleep, progressive relaxation and autogenic training were equally effective as treatments and superior to both control groups. At a 6-mo follow-up, treatment gains had been maintained in time to fall asleep but not in self-reported global improvement, while control Ss showed no spontaneous improvement on either of the measures. (15 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Predictive validity of the interview.

This paper describes the use of the interview technique as a valid and reliable instrument for predicting job placement and vocational success. The interviews of 144 blind adults were objectively and quantitatively scored, making full use of all responses elicited by the S. The results indicated that job success and vocational placement are significantly related to a number of variables tapped by the interview, such as perception of blindness, learned ways of dealing with tension, interpersonal interaction, and employment potential. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The power of suggestion: another examination of misattribution and insomnia

Impairment of mucous transport is considered significant to the postoperative development of atelectasis, but the association has never beed demonstrated in humans. Tantalum powder, which adheres to airway mucus, can be used to study mucociliary transport. The postoperative clearance of insufflated tantalum powder (mean diameter, 2.5 mum) was investigated in 25 patients. Eighteen patients underwent intra-abdominal vascular surgery and 7 undersent lower-extremity orthopedic procedures. At the completion of surgery, tantalum was insufflated into both lungs of each patient to outline a representative sample of airways from the trachea to the small bronchi. Tantalum clearance was evaluated from serial radiographs obtained immediately after insufflation, at approximately 6, 18, 26, and 48 hours later, and thereafter whenever appropriate. In the 7 orthopedic patients, clearance of tantalum was progressive and usually complete within 48 hours. Atelectasis did not occur in this group. In 14 of the 18 patients who had abdominal surgery, mucociliary clearance was markedly abnormal in that tantalum was retained for up to 6 days. Pooling of tantalum-labeled mucus occurred in dependent bronchi in 16 of these 18 patients. Pooling preceded and always accompanied radiographically visible atelectasis. Lobar atelectasis occurred in 6 patients and segmental atelectasis in 8. Tantalum-labeled mucus moved peripherally in atelectatic lobes or segments and was retained in these bronchi until re-expansion took place. Thus, impaired ciliary function and mucous transport are associated with and implicated in postoperative pulmonary atelectasis.     

Psychometric structure of psychiatric rating scales.

This study reports an exploratory principal-components analysis of four common psychiatric rating scales that yield a total of 22 separate scores. Five components were extracted accounting for 78% of the initial variance; oblique and orthogonal rotations produced identical interpretations of the components: (a) minimal functioning, (b) hostility/paranoia, (c) disturbed communication, (d) psychosis, and (e) social activity. Some limits on the present study are discussed, and suggestions for future research are presented. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Parental involvement, psychological distress, and sleep: A preliminary examination in sleep-disturbed adolescents with a history of substance abuse.

The relationships between family environment and psychological distress and between psychological distress and sleep disturbance in adolescents are well established. However, less is known about the influence of family environment on sleep disturbance. The authors' goal is to examine the effects of parental involvement on psychological distress and sleep disturbance in 34 adolescents with a history of substance abuse. Linear regression techniques and confidence intervals were used to test the significance of mediation analyses. Lower levels of parental involvement were associated with higher levels of psychological distress, and higher levels of psychological distress were associated with lower sleep efficiency and more time spent in bed. Follow-up analyses found that higher levels of parental involvement were associated with earlier morning arising times, when controlling for psychological distress. These data indicate that psychological distress is important to consider when examining the relationship between parental involvement and sleep in adolescents. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Sleep and the menstrual cycle.

To evaluate changes in sleep across the phases of the menstrual cycle, sleep-wake diaries were completed by 32 healthy women twice daily for 2 menstrual cycles. There was a significant increase in sleep onset latency and a significant decrease in sleep efficiency and sleep quality during the luteal phase. This increase in sleep disturbance was observed in the entire sample and was not related to the severity of other premenstrual symptoms. However, women having increased severity of other premenstrual symptoms reported greater luteal increase in daytime sleepiness. Thus, although menstruating women are likely to show increased sleep disturbance during the luteal phase, those with other, more severe premenstrual symptoms are more likely to experience a luteal increase in daytime sleepiness. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Psychology and inferences about public policy.

The research literature of psychology may be brought to bear on public policy issues in three ways. First, psychology may be useful in establishing procedures for determining public policy. Second, psychology may be useful in formulating the structure for policy and its implementation. Third, the literature of psychology may be reflected in the actual content of public policy. There are many issues involved in making inferences about public policy from the psychological literature. Among these issues are the generalizability of findings from basic science and problems of overadvocacy on the part of policy consultants. Researchers expect that inferences from the psychological literature would lead to innovations in the policy, but the innovations themselves must be evaluated. (PsycINFO Database Record (c) 2010 APA, all rights reserved)