Factor structure of the Menstrual Symptom Questionnaire: relationship to oral contraceptives, neuroticism and life stress

The Menstrual Symptom Questionnaire was administered to initial and cross-validation samples of college-age women. Factor analyses performed on the data from each sample failed to support Dalton's distinction between spasmodic and congestive forms of primary dysmenorrhea. Instead, a more complicated factor structure evolved, closely resembling Webster's findings, with factors representing menstrual pain, pre-menstrual negative affect, pre-menstrual water retention, pre-menstrual pain, menstrual backache and menstrual gastrointestinal symptoms. Oral contraceptive use was negatively related to menstrual pain and backache. Neuroticism scores were positively related to all six factors, and negative life changes to four of these factors, suggesting a role for psychogenic factors in both pre-menstrual and menstrual symptomatology.     

Exposure is a necessary condition for fear-reduction: a reply to de Silva and Rachman

de Silva and Rachman (1981) have recently suggested that although non-reinforced exposure of a fear-evoking stimulus constitutes a sufficient condition for unlearning fears, it does not represent a necessary condition. This conclusion was reached, in part, by examples they provide which appeared to them to suggest that fear-reduction can occur in the absence of exposure to the fear stimulus. They then call for an extended search for non-exposure types of intervention, especially those involving ‘sources of information’ and ‘expectations’. After reviewing in detail the arguments advanced, the present authors adopt the position that de Silva and Rachman's conclusions are premature and unwarranted. To abandon or lose sight of one of the most effective and perhaps most important therapeutic principles, CS exposure, would be myopic and detrimental to the advancement of effective behavior change. At this point in time what is needed is a more careful analysis of the extinction process especially at the stimulus level so the effectiveness of this principle can be maximized.     

Cognitive-behavioral treatment of agoraphobia: paradoxical intention vs self-statement training

Twenty-six agoraphobics were randomly assigned to either Paradoxical Intention (PI) or Self-Statement Training (SST) which consisted of 12 weekly 90-min group sessions with 4–5 patients per group. Major assessments were carried out at pre-treatment, 6th week and 12th week of treatment, and at 1- and 6-month follow-ups. Measures included clinical ratings of severity of condition, phobia, anxiety and depression. Furthermore, a behavioral test was administered during which changes in subjective units of discomfort and cognitions were assessed. The results indicated statistically-significant improvement over time with both treatments. ANCOVAs performed revealed superior effects on several agoraphobia measures for the PI condition at post-treatment. However, by the 6-month follow-up assessment, the groups were equivalent due to marked improvement during the follow-up phase in the SST condition. Cognitive changes were marked by a decrease in self-defeating statements without concomitant increase in coping statements. These results and recommendations for future research are discussed.     

Disrupted retrieval in directed forgetting: a link with posthypnotic amnesia

Certain reliable findings from research on directed forgetting seem difficult to accommodate in terms of the theoretical processes, such as selective rehearsal or storage differentiation, that have been put forward to account for directed-forgetting phenomena. Some kind of "missing mechanism" appears to be involved. In order to circumvent the methodological constraints that have limited the conclusions investigators could draw from past experiments, a new paradigm is introduced herein that includes a mixture of intentional and incidental learning. With this paradigm, a midlist instruction to forget the first half of a list was found to reduce later recall of the items learned incidentally as well as those learned intentionally. This result suggests that a cue to forget can lead to a disruption of retrieval processes as well as to the alteration of encoding processes postulated in prior theories. The results also provide a link between intentional forgetting and the literature on posthypnotic amnesia, in which disrupted retrieval has been implicated. With each of these procedures, the information that can be remembered is typically recalled out of order and often with limited recollection for when the information had been presented. It therefore was concluded here that retrieval inhibition plays a significant role in nonhypnotic as well as in hypnotic instances of directed forgetting. The usefulness of retrieval inhibition as a mechanism for memory updating was also discussed.     

The role of marking when reward is delayed

Two-choice spatial discrimination by rats is enhanced if a salient stimulus marker occurs immediately after every choice response and again after a delay interval (Lieberman, McIntosh & Thomas, 1979). Three experiments further explore this effect. Experiment 1 found that the second marker is unnecessary. Experiment 2 found that a marker presented before a response is as effective as one presented after. Both effects could be explained in terms of markers focusing attention on subsequent cues. Experiment 3, however, found that markers after choice enhance learning even when no discriminative cues are present following the marker. Markers thus appear to initiate both a backward search through memory and attention to subsequent events; both processes help to identify events that might be related to the unexpected marking stimulus.     

The influence of metacontrast masking on detection and spatial-choice judgments: an apparent distinction between automatic and attentive response mechanisms

Several studies of metacontrast masking in the 1960s apparently showed that the latency of simple detection responses was uninfluenced by the phenomenal dimming of the target induced by the mask. More recent studies using more suitable methodologies have clearly shown that such is not the case for situations in which the masking is a monotonically decreasing function of stimulus onset asynchrony. Experiment 1 investigated this issue for the situation in which masking is a U-shaped function of stimulus onset asynchrony. Contrary to the results obtained in monotonic masking situations, simple detection responses were not slowed by the masking. Experiment 2 demonstrated that although detection responses are not slowed in the U-shaped masking situation, spatial-choice judgments are. Experiments 3 and 4 indicated that this masking effect on spatial-choice reaction time is lost relatively rapidly with practice. However, changing the stimulus-response assignments reinstates the effect. The experiments suggest that for the situation in which U-shaped masking functions are obtained, responses that require attention (spatial-choice judgments early in practice or after stimulus-response relationships have been switched) are influenced by the metacontrast-induced phenomenal dimming, whereas responses that are automatic (i.e., detection responses; practiced spatial-choice judgments with consistent stimulus-response mappings) are not.     

The rate of scent marking by male rats and consequent olfactory preferences of female rats

An experiment is reported designed to test the hypothesis that female rats might discriminate between males that differed in the quantity of odor deposited by scent marking. Male odor donors were selected by prior screening for high or low rates of scent marking in an open arena. Females were then tested to determine whether they showed any preference for males that marked at a high rate. It was found that female rats did discriminate, but that they preferred to remain near males selected for low rates of scent marking.     

Inhibitory avoidance deficit following short-term adrenalectomy in the rat: the role of adrenal catecholamines

Impaired retention of an inhibitory avoidance response was observed in rats subjected to adrenalectomy (ADX) up to 120 hr before the single learning trial. Corticosterone substitution failed to normalize this behavioral deficit. Rats ADX 240 hr prior to the learning trial showed a normalized behavior. Adrenomedullectomy (ADXM) 48 or 240 hr before learning caused a similar impairment as in short-term ADX rats. The 240-hr ADX rats subjected to corticosterone substitution showed the same behavioral deficit as short-term ADX rats or ADXM ones. Immediate postlearning subcutaneous injection of adrenaline in a dose range of 0.005-5.0 micrograms/kg or of noradrenaline (0.005-0.5 microgram/kg) to 48-hr ADX rats resulted in a dose-related improvement of later retention behavior. Higher doses of catecholamines were less or ineffective. Postlearning treatment of 48-hr ADXM rats with adrenaline (0.5-500 micrograms/kg) caused a similar pattern of behavioral changes. It is concluded that adrenal catecholamines play an important role in the modulation of consolidation of memory. In addition, the high circulating ACTH levels that follow long-term ADX may correct for the behaviorial deficit induced by the absence of adrenomedullary catecholamines.     

Preprogramming vs. on-line control in simple movement sequences

In the present experiment the acceleration traces produced during a repetitive arm extension/flexion movement were measured in addition to the RT required to initiate such a movement. The speed at which this task was completed as well as the number of extension/flexion segments were varied to allow for either preprogramming or on-line control. Evidence from the acceleration traces and the RT data suggested that the movements completed as quickly as possible were preprogrammed; whereas, those completed more slowly were controlled on-line. Furthermore, the topologies of the power spectral density functions from the acceleration traces of each type of movement displayed characteristics typical of these forms of control.     

Psychology research and NIMH. Opportunities and challenges

As an essential contributor to the scientific understanding of mental health and illness, psychology continues to be the leading discipline receiving National Institute of Mental Health (NIMH) research support. Future behavioral science research initiatives at NIMH are likely to emphasize cognitive science, behavioral genetics, behavioral patterns and physiological systems, and personality, motivation, emotion, and interpersonal processes. Although prognostication is particularly risky in times of transition such as the present, advocacy efforts focused on mental-illness-related research are most likely to help the NIMH and the field if they avoid polarization and factionalization by providing equal encouragement for studies of biological aspects, of behavioral aspects, and of their interaction.