Purdue pegboard performance of disabled and normal readers: Unimanual versus bimanual differences

Differences between dyslexics and controls in the unimanual and bimanual conditions of the peg placement section of the Purdue Pegboard Test were examined. Twenty-three disabled and twenty-three normal readers were studied. The groups were carefully screened on a neuropsychological battery. The disabled readers were comprised of a relatively homogeneous language-disordered subgroup exhibiting deficits in naming. Significant Group X Condition interactions were obtained for both raw and percentile scores and indicated that disabled readers performed worse than controls in the unimanual compared to bimanual conditions. The dyslexics performed particularly poorly compared with controls on the left hand condition. The implications of these data for hypotheses which argue for left hemisphere dysfunction, as well as those which posit interhemispheric transfer deficits in reading disabled children, are discussed.     

Defensive burying of aversive fluids in rats: The possible role of odor

Defensive burying of flavored fluids paired with lithium chloride injections was examined. Rats showed little inclination to bury conditioned saccharin or salt solutions (Experiments 1 and 2). However, they buried tabasco sauce or dilute milk solutions readily (Experiment 3). It was hypothesized that the amount of olfactory stimulation provided by a solution may determine whether a rat engages in burying. This hypothesis received support in a final experiment which demonstrated that rats readily buried an arbitrarily selected odorous solution which was previously paired with lithium chloride. Thus the present experiments begin the process of identifying the circumstances under which burying does and does not occur.     

The concept of development in vocational theory and intervention

One of the major problems in the vocational literature is the absence of theoretical formulations which deal with development in more than a superficial manner. Specific problems are that (1) key constructs are adapted from developmental theory without proper attention to the conceptual, empirical, and methodological problems involved; (2) little recognition has been accorded to significant changes in developmental theory during the past 15 years, changes which stress the multidimensional, plastic, contextual, and life-span features of development; (3) there is a paucity of adequately designed, contextually sensitive, longitudinal research; and (4) well-established empirical findings of developmental research have been misrepresented or ignored by vocational researchers. It is proposed that a theory of life-span vocational role development must meet the conceptual and methodological requirements of a developmental approach, that it must contain a contextual perspective, and that it must be relational in the sense that it provides for the examination of the “goodness of fit” between individual and contextual developments. The consequences of this viewpoint for vocational intervention are described as a more pronounced focus on events, processes, and life periods which are identified as antecedents of major vocational decisions. Finally, it is observed that vocational intervention should be viewed as a succession of procedures designed to assist the individual, throughout his/her life, to adapt vocational functioning to changing personal situations as well as to changing economic and contextual circumstances.     

Increasing achievement motivation and work productivity in a chronic psychiatric population

The major goal of this study was to determine if social reinforcement for behavior in a simulated work activity would increase achievement motivation, work interest, and simulated work activity production. Forty-five chronic psychiatric patients were randomly assigned to one of three groups: work sample with praise, work sample without praise, and a no-treatment control group. A 3 (between) × 2 (within) analysis of variance was run for each dependent measure, that is, achievement imagery, work interests, and simulated work production. The main effect for the interaction between trials and treatment was significant on each dependent measure. Follow-up Duncan Multiple Range Tests indicated that the praise group showed a significant improvement on each dependent measure, pre to post, as well as significantly greater improvement than the no-treatment control group and/or the work sample without praise group. These results are discussed in terms of the procedure used as a method for increasing motivation and in terms of possible generalization of results to other treatment situations.     

Stimulus intrusion on fixed-interval responding in the rat: The effects of electric shock intensity,temporal location,and response contingency

After a scalloped lever-press response pattern had developed under a fixed-interval food reinforcement schedule, a 15-sec electric shock was intruded for different groups of rats in the first, second, third, or fourth quarter of each inter-reinforcement interval. Shock intensity was systematically increased for individual rats over 70 sessions, from 0.05 to 1.6 mA. Additional between-groups comparisons involved response-dependent versus clock-dependent fixed-interval schedules, and response-dependent versus response-independent electric shock intrusion. Response rates within each fixed interval prior to, during, and following electric shock intrusion showed regular and reproducible increases and decreases under systematic application of the experimental variables. These results provide further evidence that the functions of a stimulus are determined in part by the parameters of intensity, response contingency, and temporal location with respect to reinforcement.     

Practical skills and personality development

Declarers of above average, average, and below average Practical Skills on the ACT Student Profile Report were compared on the basis of OPI personality scale scores by means of multivariate analysis of covariance. Results indicated significant differences by level of Practical Skill and no significant interaction between sex and practical skill category. Distributional differences of above average, average, and below average practical skills by various vocational choices were investigated by X². The personality differences found were interpreted as developmental, according to Erikson's theory.     

The effect of Pavlovian stimuli on the acquisition of a new response

Three experiments explored the effects of response dependent stimuli which have had different types of contingent relationships with positive reinforcement. Results showed consistent differences in the effects of response dependent appetitive Pavlovian CS + s, CS ? s, and truly random control (TRC) stimuli on the acquisition of a new response. These differences were shown in both a free operant and a discrete-trial learning situation. Appetitive Pavlovian CS?s consistently produced lower levels of responding than did TRC stimuli, even in an experimental situation free of possible contrast effects. The results of these experiments extended a contingency analysis of acquired associations to appetitive conditioning and provided a clear demonstration of a conditioned reinforcement effect against a variety of control procedures.     

The dimensions of career and work orientation in college women

The purpose of this study was to clarify the meaning of the construct, career orientation. Fourteen presumed measures of career orientation as well as Super's Work Values Inventory were administered to college women. Analysis of the relationships among these variables identified two relatively independent clusters. The first cluster most closely approximated the usual definition of career orientation. Career-oriented women were found to be highly career motivated and perceived the career role as primary in their adult lives. The second cluster was called work orientation. This orientation characterized women with well-defined occupational aspirations who placed a high value on both the career role and marriage-family responsibilities in their future. Work-oriented women tended to choose traditionally feminine occupations in contrast to the career-oriented women whose aspirations included higher level and less traditional occupations.     

Token test performance by dyslexic adolescents

An abbreviated form of the Token Test was administered to 42 normal readers and 42 dyslexic adolescent males. The greatest divergence between the two groups was seen on Part V where syntactic complexity varies. An error analysis also supported the hypothesis that some, but not all, dyslexics have an impaired ability to process syntactic information. The Token Test, particularly Part V, would be a useful aid in the evaluation of dyslexic individuals.