A stochastic model for inter-keypress times in a typing task

A mathematical model for the inter-keypress times (IKT) in a typing task is proposed. The model, which includes a diffusion process terminated by a single response threshold, was evaluated using data obtained from typists. The differences in performance for successive cross-hand and within-hand keypresses were examined using IKT distributions and hazard functions, and it was shown that the empirical hazard functions could be fit by the theoretical hazard function derived from the convolution of normal and inverse Gaussian random variables. Some possible applications of the model for the evaluation of fatigue and strategic effects in typing are suggested.     

Social skills and depression in adolescent suicide attempters

The relationship among depression, social skills, and suicidal behavior was examined in a sample of 41 adolescents hospitalized in a general medical setting following a suicide attempt. These subjects were compared to 40 nonsuicidal psychiatrically hospitalized adolescents. Level of depression, assessed using the Children's Depression Inventory (CDI), and social skills, assessed via the Matson Evaluation of Social Skills with Youngsters (MESSY), were evaluated for all subjects. The suicide attempters and psychiatrically hospitalized patients were not found to differ on either the CDI or MESSY. However, multiple regression analyses revealed the factor scores of the MESSY to be related to depression in both patient groups. The data provide support for the relationship between social skills and depression. Results are also discussed in terms of the similarities between adolescent suicide attempters and nonsuicidal psychiatrically disturbed adolescents.     

Sexual confusion among certain college males

In dealing with college age (18-22) males, clinical observations have shown a fairly common inability to successfully form intimate relationships with same-age females. This problem often appears to be due to an inability to bond and trust that is rooted in the formative years in the nuclear home. When this happens, the young male frequently develops a fear of being sexually abnormal, perhaps even homosexual. This manifests itself in shame, anxiety, depression, denial, reaction formation, performance anxiety, concern about being found out, isolation, substance abuse and, occasionally, acting out. Getting such persons to admit these fears is generally extremely difficult, requiring gentle and empathetic, but persistent, probing on the part of the therapist. Therapy consists of understanding and acceptance by the client that these fears are most often reactive, that they are commonly held, and that when they are seen in proper perspective, they often diminish. The present paper reviews some of the literature on sexual developmental issues of the adolescent male as a backdrop for this problem. The specific difficulties related to reactive homophobia are explored, and some therapeutic approaches suggested.     

Panic disorder: cognitive-behavioral treatment

The effectiveness of an integrated treatment program utilizing cognitive-behavioral therapies for Panic Disorder was examined. Treatment was comprised of Cognitive Model of Panic-derived procedures, Cognitive Therapy and Applied Relaxation Training. Subjects meeting DSM-III-R criteria for Panic Disorder received thirteen 2.5-hr sessions of outpatient therapy in small groups, over a 12-week period. Subjects were given an extensive rationale of the etiology, development and maintenance of Panic Disorder, within the framework of the Cognitive Model of Panic, and controlled behavioral experiments in panic evocation to internal panicogenic cues, cognitive reappraisal of somatic and ideational cues, breathing retraining, Applied Relaxation Training and Cognitive Therapy to identify and remediate maladaptive beliefs and dysfunctional cognitive schemas. A comprehensive assessment battery was given at pre-mid-post-treatment which included measures of tripartite functioning, global severity, panic, fear, anxiety, depression and psychiatric symptomatology. Analyses indicated statistically significant improvements across all outcome domains. All subjects were free of spontaneous (uncued) panic attacks at post-treatment, and all met operationalized criteria for high endstate functioning. These findings are discussed, with recommendations for future research.     

Followup of psychoanalysis five to ten years after termination: III. The relation between the resolution of the transference and the patient-analyst match

As part of a long-term followup study of the outcome of psychoanalysis, we examined the relation between the extent of resolution of the transference at termination and the characteristics of the patient-analyst match. For twelve of the seventeen patients interviewed five to ten years after termination of psychoanalysis, the researchers found that the patient-analyst match played a role in the outcome of the analysis. Illustrations of the influence of the match in cases where the transference was resolved and those where it was not are presented.     

Is the match/mismatch model based on a statistical artefact?

In the match/mismatch model, recently formulated by Rachman and coworkers, it is stated that incorrectly predicted aversive experiences are generally followed by an immediate adjustment of the predictions concerning aversiveness of the next experience. This model can be considered to reflect a psychological process of the formation of expectations. In the present article it is argued that a simple H0 model, assuming that predictions are completely randomly generated by the subject, may account for the same effects. This H0 model is used in a stringent test of empirical data to determine if there are any effects of the discrepancy between prediction and experience on next prediction that exceed the effects explained by the H0 model. Although the H0 model produces effects very similar to the empirically observed effects, there is clear support for the hypothesized influence of the discrepancy between prediction and experience. Therefore, the model appears to reflect 'real' psychological processes and not chance findings.     

Is agoraphobia harder to treat? A comparison of agoraphobics' and simple phobics' response to treatment

Agoraphobia is reputed to be more difficult to treat than simple phobia. In a test of this supposition, 38 agoraphobics and 19 simple phobics were each given 10 sessions of graduated in vivo exposure. They were assessed before and after therapy using a behavioral avoidance test, behavioral diaries, and self-report measures. Analysis of covariance revealed unequivocal posttest differences only on self-assessed disability level; agoraphobics had changed less in their report of global disability immediately following treatment but not at follow-up. Sixty-eight percent of the simple phobics showed clinically significant improvement on avoidance of the Main Phobia, compared with 34% of the agoraphobics. On three other outcome measures, including more precise behavioral measures of phobia, agoraphobics and simple phobics responded equivalently to treatment. Given clinicians' impression about the comparative difficulty in treating agoraphobic clients, fewer differences in treatment response were obtained than were expected. Several possible explanations for this discrepancy are discussed.     

Types and correlates of blood/injury-related vasovagal syncope

This study investigated by interview, the initial syncopal episode of 103 blood/injury-related vasovagal fainters in order to examine two competing hypotheses concerning their origins. Graham (Circulation, 23, 901-906, 1961) postulated that the faint resulted when sympathetic nervous system (SNS) activity ceased on termination of a threat, leaving parasympathetic nervous system (PNS) activation unopposed. Engel [Fainting (2nd edn), 1962; Annals of Internal Medicine, 89, 901-906, 1978] proposed that when in the face of threat with SNS activation, escape is blocked, the PNS becomes activated as the conservation-withdrawal response, leading to syncope. We found cases clearly conforming to each of these formulations as well as some with characteristics of both, and some who fainted in response to blood or injury but with no perception of threat. The Graham and Engel types did not differ in terms of fear or avoidance of blood, injury, or medically-related situations nor did they differ in the frequency with which their parents reported blood/injury-related syncopal episodes. It is proposed that both may be activated by a common psychological mechanism involving cessation of a defensive posture. In contrast, the non-threat fainters showed significantly less medically-related avoidance and had a greater percentage (94%) of parents with positive faint histories.     

On the formation and regulation of anger and aggression. A cognitive-neoassociationistic analysis

Noting that a wide variety of unpleasant feelings, including sadness and depression, apparently can give rise to anger and aggression, I propose a cognitive-neoassociationistic model to account for the effects of negative affect on the development of angry feelings and the display of emotional aggression. Negative affect tends to activate ideas, memories, and expressive-motor reactions associated with anger and aggression as well as rudimentary angry feelings. Subsequent thought involving attributions, appraisals, and schematic conceptions can then intensify, suppress, enrich, or differentiate the initial reactions. Bodily reactions as well as emotion-relevant thoughts can activate the other components of the particular emotion network to which they are linked. Research findings consistent with the model are summarized. Experimental findings are also reported indicating that attention to one's negative feelings can lead to a regulation of the overt effects of the negative affect, I argue that the model can integrate the core aspect of the James-Lange theory with the newer cognitive theories of emotion.