Modification of autoregulation of intrinsic physical processes in field-dependent subjects: a study of performance in heart rate biofeedback]

Witkin, the founder of the concept of "field dependence", assumed that there is a relationship between field dependence and body perception. However, this hypothesis was never investigated experimentally in a well-controlled study. Twenty healthy subjects learned to increase and decrease their heart rate dependent upon two discriminative stimuli. In order to increase and decrease their heart rate they received exteroceptive feedback (movements of a rocket-ship on a video screen). Each trial lasted 6 s. The distance of the rocket-ship from a certain point indicated the amount of the achieved increase or decrease. Field dependent subjects scoring higher in field dependency as measured by the Embedded Figures Test were poorer at heart rate control on feedback and transfer trials (test trials with feedback removed) than were subjects scoring low in field dependency. This result may be of therapeutic interest in the application of behavioral medicine to psychosomatic and psychiatric disorders.     

The dimensions of tonal experience: A nonmetric multidimensional scaling approach

Subjects were required in each trial to directly compare two pairs of tones and indicate which pair of tones had the greater subjective difference or dissimilarity. Eleven tones differing in both intensity and frequency were employed. Subjects made binary comparisons among the 55 tone pairs which can be formed from the set of 11 tones. These paired comparisons of tonal intervals were used to determine a two-dimensional Euclidean representation for tonal experience. Loudness and pitch appeared as orthogonal dimensions in this representation. However, a 45-deg rotation of loudness and pitch axes produced axes which could be identified as volume and density. This relationship suggested that volume and density were simple functions of pitch and loudness. Volume and density predictions based on this two-dimensional representation were shown to provide a good account of the data from three experiments on volume and density.     

Cognitive bias of optimism and its influence on psychological well-being.

An investigation of the cognitive bias observed in optimism and the influence of optimism on psychological well-being was conducted. The cognitive bias was assumed to be related to the repressive style of information processing, represented by the trait scale of the State-Trait Anxiety Inventory and the Social Desirability scale. Optimism and well-being were measured by the Life Orientation Test and the Social Optimism scale as well as by the Life Satisfaction and Depression scales, respectively. These scales were applied to a sample of 200 individuals. Trait Anxiety and Social Desirability led to a high multiple correlation with the Life Orientation Test (R = .54) and a moderate multiple correlation with the Social Optimism scale (R = .30). Higher correlations were obtained for the expectation of a positive than of a negative future. Both the Life Orientation Test and the Social Optimism scale contributed to the high multiple correlation with psychological well-being (R = .52).     

Equipment is cheap,but the field must develop and support common software for psychological research

Over the last 18 years, the commercial sector has provided psychology with very advanced equipment at low cost. It is unlikely, however, that the commercial sector will provide psychology with the special-purpose software that is needed for data acquisition. Software costs are now the greatest cost of data acquisition. Psychology needs common software used by many researchers. Efforts and funds must therefore be concentrated so that comprehensive software systems can be developed and supported. Software systems should provide open architectures to allow individual researchers to add specialized functions within an integrated environment.     

Expectations for Postcombination Organizational Life: A Study of Responses to Merger and Acquisition Scenarios1

A scenario experiment was conducted to investigate expectations for postmerger/acquisition (combination) life. Relative size of participants' organization (i.e., being in an organization of smaller, equal or larger size), and the motive for combining (growth or survival) were predicted to influence postcombination expectations regarding personal autonomy, the use of power, postcombination sense of organizational morale/identity, feelings of job security, and career opportunities. After reading scenarios of organizational combinations in which relative organizational size and motive were manipulated, 252 MBA students responded to questionnaires designed to assess their postcombination expectations. Results indicated that size and motive had significant effects on expectations. In brief (a) the most positive postcombination expectations were from persons in larger organizations when the motive for combining was growth and (b) the least positive postcombination expectations were from persons from smaller organizations when survival was the motive for combining.     

Psychosocial predictors of gay men's AIDS risk-reduction behavior.

Used psychosocial variables derived from the health belief model (Rosenstock, 1974), Bandura's (1986) self-efficacy framework, and protection motivation theory (Rogers, 1984) to predict self-reported AIDS risk-reduction behaviors in a sample of 389 homosexual men who participated in the Multicenter AIDS Cohort Study in Los Angeles and who knew their HIV antibody status. Hierarchical multiple regression analyses showed that self-efficacy, perceived risk, response efficacy, and prior sexual behavior accounted for approximately 70% of the variance in the total number of sexual partners and the number of anonymous partners over a 6-month interval, controlling for demographic variables, HIV antibody status, and presence of a primary partner. A logistic regression analysis showed that barriers to change predicted increased unprotected anal receptive intercourse over a 6-month interval, controlling for prior behavior. The relation of health beliefs to risk-reduction behavior was substantially different for HIV-seropositive men without primary partners than for other groups of gay men. Implications for interventions are discussed.     

Voluntary selection of and tolerance to 1,2 propanediol (propylene glycol) by high and low ethanol-selecting mouse strains.

Fifteen male mice from each of 4 inbred strains (C57BL/6J, BALB/cJ, CBA/J, and DBA/2J) were tested to determine their voluntary self-selection of a 10% solution of 1,2 propanediol (1,2 PD), A 3-carbon alcohol of low toxicity. As with ethanol, the C57BL/6J strain consumed significantly greater amounts that the 3 other low ethanol-selecting strains. A second experiment determined that the 3 low selecting strains suffered significantly greater depression of the central nervous system from 1,2 PD than the high selecting C57BL strain. It was also found that ethanol is a much more potent depressant that 1,2 PD. These results are discussed in terms of the possible role of neural sensitivity in regulating consumption levels of the 2 alcohols.     

A scale for the psychological magnitude of number

A scale of the “psychological magnitude” of number was constructed from similarity ratings of the 45 number pairs that can be obtained from a set of 10 integers. A nonmetric analysis of these similarity ratings showed that “psychological number” was a power function of number.     

Need for affiliation and sex as moderators of the relationship between need for achievement and academic performance

Sex and need for affiliation (n Aff) were investigated as potential moderators of the association between need for achievement (n Ach) and academic performance. Measures of n Ach and n Aff, based on the Personality Research form, were obtained or 78 male and 114 female grade 11 students. On the assumption of a conflict between n Ach and n Aff, it was hypothesized that high n Ach, low n Aff students earn higher grades than high n Afh, high n Aff students. The results for both males and females supported the hypothesis. Evidence was available which suggested that the poorer academic performance of the high n Ach, high n Aff students was due to an inability to maintain effectively their attention while studying. The results also indicated that, relative to other students, high n Ach females displayed a markedly superior academic orientation. Attention was drawn to the fact that the formance of the high n Ach girls appears incconsistent with some current theorizing regarding the achievement orientation of females.