Patient inquiry into mental hospitalization: a quantitative analysis.

In this section we have assembled a small collection of data concerned with the issue of whether or not adolescents would profit from reflective inquiry into the closed area of mental health care. We have analyzed, arranged and interpreted the data from our study and conclude it demonstrates that adolescent inpatients did profit substantially from a reflective inquiry into mental health care. The number of subjects involved in this experimental program was small. The subjects of the experimental program were not selected randomly. Moreover, the researcher could not control for a number of intervening variables. For this particular group the intervening variables were many: changes in the subjects' individual treatment program, level of tranquilizing medication, attitude of other staff toward the experimental program, relations with parents or relatives, et cetera. This list covers some of the more important weaknesses of the experimental design. In the account of the experiment we reported the influence of other significant intervening variables as they emerged during the course of the study. Even with these important limitations the total push of the results in the direction of our argument compels us to conclude that it is clearly profitable for adolescent inpatients to reflectively inquire into the closed area of mental health care. Although the data reported here are not of predictive value, we believe they indicate the importance of having adolescent inpatients reflectively examine their social situation.     

A honeycomb data array for simulating visual processes using the C programming language

A method of simulating visual processes is formulated as a C language program. The two-dimensional image array has a honeycomb structure, in which each cell has six immediate neighbors. A general iterative simulation method that represents changes in time is used. The method is illustrated with tests of Horn’s (1974) model of the retinex lightness process of Land and McCann (1971) and of a modified form of that model.     

Perfectionism, depression, and academic performance

In samples of 30 Canadian and 117 American undergraduates, academic performance was more strongly correlated with perfectionism scores (Revised Almost Perfect Scale) (r = .20 and -.17) than with those on self-reported depression (CES-Depression) (r = -.09).     

Distraction for Pediatric Immunization Pain: A Critical Review

The paper provides a critical review of distraction for pediatric immunizations in order to determine clinical practicality and efficacy of this commonly employed intervention. The MEDLINE and PsycINFO databases were searched to identify papers that included an evaluation of a distraction intervention as a method of pediatric immunization pain management. Fifteen papers were included in this review. Effect sizes were calculated to estimate the clinical significance of findings. In order to examine possible differences in effect sizes related to distraction characteristics, chi square analyses were conducted. Results indicate that distraction is clinically effective in the reduction of pain during pediatric immunizations. Support is found for behavioral and cognitive explanations of distraction mechanisms. Further, various distraction stimulus characteristics were found to be associated with the clinical significance of findings. This article is based on the preliminary examination paper of the first author under the direction of the second, at West Virginia University.     

Measurement of low-signal suppression and other parameters of the forced-choice psychometric function

Empirical forced-choice psychometric functions often depart in shape from those based on the theory of normal sensory-excitation distributions and optimal decision processes. The typical departure is that the detectability of small signals is too low compared to that of high signals. Some possible explanations were reviewed and it was emphasized that the source of the effect is not known with certainty. An extra parameter resembling a threshold was introduced for the measurement of the effect, and a method of moments was proposed for estimating the two parameters of the resulting two-alternative forced-choice psychometric function. The method was tried out with success in the task of detecting a 0.1-sec luminance increment to a steady adapting luminance of a large visual target. There were large amounts of low-signal suppression, indicating the advisability of reviewing some current psychophysical practices.