Fetal brain tissue transplants reduce visual deficits in adult rats with bilateral lesions of the occipital cortex

Fetal brain tissue from the occipital or the frontal cortex was implanted into the damaged occipital cortex of adult rats. The animals receiving grafts of embryonic frontal cortex showed partial restoration of brightness discrimination while recipients given homologous implants of occipital cortex were as impaired as those animals with lesions alone. Neither frontal nor occipital grafts aided in the performance of a pattern discrimination problem; both groups of brain-damaged animals were unable to learn the task. Nonetheless, both groups of animals had viable and enlarged grafts with similar neuronal and glial profiles.     

Emotional distress in tort law

Although judges and legislators increasingly provide compensation for claims of emotional injury, laws have evolved in an arbitrary and inflexible fashion. A number of judicial barriers to these claims have been developed and applied in ways that unfairly prevent compensation. Likewise, frivolous claims are occasionally granted. Judicial and legislative approaches to this problem should involve enough flexibility to accommodate the facts peculiar to each case. A flexible approach is also responsive to the rapid developments that are occurring in the behavioral and medical sciences which are often consulted in solving disputes involving claims for emotional distress.     

An empirical investigation of Shneidman's formulations regarding suicide

This study of suicide notes involved the deduction of 50 protocol sentences that reflected important aspects of Shneidman's formulations regarding suicide. Independent judges noted the incidence of contents corresponding to the protocol sentences in 33 genuine and 33 simulated notes. Statements that were found significantly and more frequently in genuine notes included the following: the experience of adult trauma such as a calamitous relationship; a rejection; the withdrawal of a significant person resulting in despair; perceiving another as dooming one to the suicide; expressions of ambivalence; feelings of love, hate and other emotions; feelings of helplessness, pessimism and emotional confusion; appearing to be intoxicated by one's overpowering emotions and constricted perceptions; and the communications appearing to have unconscious implications. Statements of "egression" and more logical reasoning were more characteristic of the simulated notes. A frequency count in the genuine notes indicated that many protocol sentences were also very predictive of the content. Implications of the results are discussed.     

The Heterosocial Assessment Inventory for Women: A psychometric and behavioral evaluation

This paper presents a preliminary psychometric and behavioral evaluation of the Heterosocial Assessment Inventory for Women (HAI-W), a novel self-report instrument that evaluates five dimensions that may influence performance in 12 heterosocial situations: likelihood of initiation, anxiety, skillfulness, expectation of outcome, and influence of attractiveness. Study I obtained acceptable reliability and concurrent validity data and described the factor structure of the HAI-W with female college students. Study II found a significant relationship between the HAI-W factors and global ratings of the role-play performances of high- and low-heterosocially competent female college students as rendered by the male confederate, peer judges, and expert judges. The implications of these findings for the multidimensional assessment and facilitation of heterosocial competence are discussed.This study is part of a dissertation submitted to the Department of Psychology, Georgia State University, under the direction of Michael A. Milan. Portions of these data were presented at the Annual Meeting of the Association for Advancement of Behavior Therapy, Los Angeles, 1982.     

On optimal smoothing and derivative estimation from noisy displacement data in biomechanics

Estimating derivatives from noisy displacement data is a notoriously ill-posed problem in signal processing and biomechanics. Following the work of Wood and Jennings (1978) and Hatze (1979, 1981), the present paper describes the use of optimally regularized, natural quintic splines for estimating smoothed positions, velocities, and accelerations from equidistantly sampled, noisy position measurements. It appears that the nature of the boundary conditions of the data is of some importance, since various algorithms used hitherto result in artefacts throughout the data if the true derivatives at the record ends differ significantly from zero. Natural quintic splines do not suffer from this disadvantage below the third derivative.The ill-posed character of movement analysis has some interesting implications for movement synthesis and optimization, similar to the indeterminacy of muscular co-contraction from merely external, biomechanical measurements.     

Sensation-seeking and selection of entertainment

The relationship between entertainment activity preference and sensation-seeking was investigated by survey and actual movie selection and viewing. Cardiac rate and rate change was monitored during movie selection and viewing. High sensation-seeking (HSS) females reported preferences for activities centered about alcohol, sexually-explicit materials and ‘rock’ music. HSS males reported preferences for sexually-explicit materials and news/documentary reports. Low sensation-seeking (LSS) males and females reported preferences for the musical stage, theatrical drama and comedy, and romantic/dramatic novels. HSS males and HSS females allotted high proportions of viewing time to an ‘action’ movie, and changed channels more frequently than LSS. The indices of cardiac response utilized in this study were unrelated to movie viewing activities, a result which does not support the ‘optimal level of arousal’ view of sensation-seeking proposed by Zuckerman (1979).     

An analysis of the structure of justification of ethical decisions in medical intervention

The most important distinction in value theory is the subjective-objective distinction which determines the epistemological status of value judgments about medical intervention. Ethical decisions in medical intervention presuppose one of three structures of justification — namely, an inductive approach, a deductive approach which can be either consequentialist or non-consequentialist, and a uniquely ethical approach. Inductivism and deductivism have been discussed extensively in the literature and are only briefly described here. The uniquely ethical approach which presupposes value objectivism is analyzed in detail. This method involves a purely ethical inference which moves from facts to values directly with an emphasis on reason which involves a non-logical justification (as opposed to illogical). It involves the use of natural practical arguments which have an imperative conclusion but no imperative premise and exhibit a value-requiredness between two states of affairs.