Power and speed components of individual differences in letter matching

Several previous studies have reported a correlation (typically around −.30) between standardized verbal ability test scores and name identity minus physical identity reaction times (NI-PI) in a letter-matching task. This correlation has usually been thought to reflect the mutual dependence of both measures on long-term memory access time. The present research was designed to assess Carroll's (1981) suggestions that: (a) NI — PI may not be the optimal formula for predicting standardized test scores from letter matching data, and (b) NI — PI may actually be related to the speed rather than the power component of standardized tests. Fifty-one subjects previously tested with a standardized reading test participated in letter-matching and word-reading tasks. The latter tasks required subjects to read words and specially constructed pseudowords. Power and speed measures were derived from the word-reading tasks and the standardized test on theoretical grounds (and supported by a principal components analysis). The results supported both of Carroll's contentions. NI — PI reaction time was related more to speed than power and the NI — PI statistic (as usually used) was not the optimum formula for predicting standardized test scores.     

Effects of parent enhancement therapy on the treatment outcome and generalization of a parent training program

The purpose of the present study was to examine the effectiveness of parent enhancement training in facilitating treatment and maintenance effects of a parent training program. Seventeen mothers and their clinic-referred noncompliant children were assigned to either a parent training alone group or a parent training plus parent enhancement therapy group. Fifteen mothers and their nonclinic children served as a quasi-control group. All clinic-referred mother-child dyads were treated individually by teaching the mother to reward compliance and other prosocial behavior and to use time-out for noncompliance. In addition, mothers in the parent training plus parent enhancement group also received treatment related to the following areas: parent's perception of their child's behavior, parent's personal adjustment, parent's marital adjustment, and parent's extrafamilial relationships. Assessment consisted of four home observations by independent observers prior to treatment, after treatment, and at a 2-month follow-up. The data indicated that the parent training plus parent enhancement therapy was more effective than parent training alone in changing child deviant behavior at posttreatment and in maintaining child compliance, child deviant behavior, parental rewards and parent contingent attention at follow-up. The control group did not change over the three assessment periods.     

The consistency of the items of an activity preference blank

Results of an experiment to obtain data on the consistency of the items of two forms of an Activity Preference Blank are presented. Both Form I and Form II, which was a revised edition of Form I, were administered twice, so consistency data are available for both forms. A sub-item is said to be consistent if a high proportion of men marked it the same way,M for preferred Most andL for preferred Least, on both administrations of the test. The data of the experiment were investigated to see what happens to the consistency of sub-items when the items are changed in context, when the number of sub-items in an item is reduced, and when the time-interval between the administration and the re-administration of the test is increased. The author also gives data on the consistency of the responses made to particular combinations of sub-items and data on item consistency when all sub-item combinations are taken into consideration.     

Case studies of cognitive precocity: The role of exogenous and endogenous stimulation in early mental development

Case studies of the highly successful socialization commonly evident in the development of mentally precocious children may furnish an excellent source of heuristic information on how early experience contributes to development, without down-grading our understanding of how phenotypical development is jointly determined by the cumulative interactions of genotypical and experiential processes. Both the investigation and case study literature on bright children suggest that exceptional early abilities typically flourish in highly intellectual families who early involve their children in rational communication with adults and who intensively stimulate them cognitively during early development. Two general parental strategies emerge from the case studies, one following deliberate, systematic instruction, commonly involving play, and the other applying stimulation incidentally to intensive, continuing interaction between caregiver and child. Both strategies appear to be highly flexible, interactive, and child-oriented, however, and both overlap in many ways, drawing on combinations of similar specific techniques and following a similar sequence in which interactions become increasingly, but never totally, endogenously regulated, as the child masters in exceptional ways high level sybmbolic skills (especially reading but often writing and math), complex problem solving skills, and vast bodies of knowledge. Much of the difference between the strategies can be attributed to differences in parental belief systems that alternatively stress hereditarian or environmental bases for development.     

Reproductive Freedom, Educational Equality, And Females' Preference for Resource-Acquisition Characteristics in Mates

Females' preference for resource-acquisition characteristics in mates has been explained as an evolved psychological mechanism that conveyed reproductive advantage to human ancestors. To explore the hypothesis that females express this preference more strongly when their educational opportunities and reproductive freedom are limited, we reanalyzed mate-preference data collected from 37 cultures by Buss et al. (1990). The results demonstrate that females (but not males) strongly prefer resource-acquisition characteristics in mates when they live in cultures low in both female reproductive freedom and educational equality between the sexes. Discussion focuses on how evolutionary, interactionist, and social-role theories might explain these results.     

Political Ideologies and Support for Censorship: Is It a Question of Whose Ox Is Being Gored?

Two studies are described. one of 381 university students and the other a statewide survey of 295 adults, both of which examine the relationship between attitudinal support for censorship and political ideologies. The results of these studies are interpreted as challenging the view of Suedfeld, Steel, and Schmidt (1994) that support for censorship is a function of both the works in question and the political ideologies of the respondents. In both studies we find that support for censorship is somewhat consistent across messages and images of differing political content. and that support for censorship is generally greater among those with conservative political attitudes, regardless of the content of the works in question. A model of political attitudes (Maddox & Lilie. 1986) that conceptualizes American political idcologies as consisting of two relatively independent dimensions, rather than a single left-right dimension. is proposed as a more effective means of conceptualizing this issue.     

Hemispheric contributions to the integration of visual and auditory information in speech perception

Differential hemispheric contributions to the perceptual phenomenon known as theMcGurk effect were examined in normal subjects, I callosotomy patient, and 4 patients with intractable epilepsy. Twenty-five right-handed subjects were more likely to demonstrate an influence of a mouthed ward on identification of a dubbed acoustic word when the speaker’s fag vase lateralized to the LVF as compared with the RVF. In contrast, display of printed response alternatives in the RVF elicited a greater percentage of McGurk responses than display in the LVF. Visual field differences were absent in a group of 15 left-handed subjects. These results suggest that in right-handers, the two hemispheres may make distinct contributions to the McGurk effect. The callosotomy patient demonstrated reliable McGurk effects, but at a lower rate than the normal subjects and the epileptic control subjects. These data support the view that both the right and left hemisphere can make significant contributions to the McGurk effect.     

A review of functional assessment use in data-based intervention studies

We reviewed the extent and variety of functional assessment procedures used in behavioral intervention studies. The contents of six research journals dating from 1986 to 1992 were searched for articles describing single-subject intervention studies that targeted problematic social behaviors. Articles meeting this initial criteria were examined to determine if a functional assessment was conducted. If so, the various procedures comprising the functional assessment, types of interventions conducted, and demographic characteristics of study participants were recorded for each study. Results are compared to similar reviews of research dating from 1980–1985. Potential reasons for the paucity of studies incorporating functional assessment procedures are discussed. Finally, directions for future research and applied practice are provided.