Hippocampal lesion syndrome: Switching to and from a place hypothesis

Spatial discrimination learning (Experiment I) and strategy shifts (Experiment II) were examined in experimentally lesioned rats. Sixty adult male rats were in one of five lesion groups (N = 12/group): operated controls, fornical, entorhinal, fornicoentorhinal and dorsal-ventral hippocampal. All animals reached criterion on the discrimination learning test. In the strategy shift experiment, however, animals with hippocampal lesions had more difficulty than animals without hippocampal lesions. The findings suggest that the hippocampus may not be involved in learning strategies, but in switching a strategy.     

The role of semantic knowledge in retrieval from episodic long-term memories: Implications for a model of retrieval

Two experiments were conducted, using a paired-associate recall reaction time paradigm, to assess the role semantic knowledge plays in retrieval of long-term episodic memories. In Experiment I, word frequency and meaningfulness were manipulated; high-frequency stimuli led to significantly longer reaction times, while meaningfulness had no significant effect. In Experiment II, the role of the distribution of preexperimental associates of the stimulus was further investigated by comparing retrieval time when the stimulus had either a high- or low-strength primary associate; the former resulted in longer reaction times. The implications of these results for a model of retrieval were discussed. Exhaustive search models were found inadequate, but viable parallel and serial self-terminating models were developed. In both of these models, retrieval time is a function of strength of the correct associate, relative to total strength of a restricted set of semantic associates of the stimulus.     

Intrinsic vs. Extrinsic Religious Motivation and the Marital Relationship

Research suggests a strong positive relationship between religiosity and marital satisfaction. Neglected, however, are differences in satisfaction based on nominal religious motivation. The influence of religiosity on marital satisfaction was examined for 74 couples. Results indicate the higher the husband's intrinsic religiosity, the higher the satisfaction for both partners. Wives' satisfaction increased as they became more extrinsically motivated. Differences in religiosity significantly decreased satisfaction for husbands. Findings are discussed from the perspective of gender-based interaction patterns, gender demographics of religious devotion and activity, and power dynamics. We recommend therapists understand these findings and integrate them into the clinical dialogue.     

Self-report schedules for use in assessing the marital adjustment of abusive and nonabusive parents

Abstract

Abusive parents and nonabusive parents were compared on three self-report behavioral marital questionnaires. The questionnaires—the Marital Status Inventory, the Locke-Wallace Marital Adjustment Test, and the Areas of Change Questionnaire—have been used in pre-post evaluations of treatment and in the discrimination of distressed from nondistressed marriages. The results indicated that both groups reported having only mildly distressed marital relationships. The report presents initial normative data on the questionnaires for abusive parents and nonabusive parents who were seeking help with child management problems.     

When do letter features migrate? A boundary condition for feature-integration theory

Feature-integration theory postulates that a lapse of attention will allow letter features to change position and to recombine as illusory conjunctions (Treisman & Paterson, 1984). To study such errors, we used a set of uppercase letters known to yield illusory conjunctions in each of three tasks. The first, a bar-probe task, showed whole-character mislocations but not errors based on feature migration and recombination. The second, a two-alternative forced-choice detection task, allowed subjects to focus on the presence or absence of subletter features and showed illusory conjunctions based on feature migration and recombination. The third was also a two-alternative forced-choice detection task, but we manipulated the subjects' knowledge of the shape of the stimuli: In the case-certain condition, the stimuli were always in uppercase, but in the case-uncertain condition, the stimuli could appear in either upper- or lowercase. Subjects in the case-certain condition produced illusory conjunctions based on feature recombination, whereas subjects in the case-uncertain condition did not. The results suggest that when subjects can view the stimuli as feature groups, letter features regroup as illusory conjunctions; when subjects encode the stimuli as letters, whole items may be mislocated, but subletter features are not. Thus, illusory conjunctions reflect the subject's processing strategy, rather than the architecture of the visual system.     

Adaptation in the constancy of visual direction tested by measuring the constancy of auditory direction

Modification of the constancy of visual direction was produced by partially adapting Ss to the displacements of the visual field caused by magnifying lenses during 1 h of continuous head turning. The adaptation effects were measured by determining the range of perceived target immobility before and after this adaptation period. A method for measuring the range of apparent immobility of an auditory signal during head movements was developed and employed to test whether a modification of the constancy of visual direction transfers to the constancy of auditory direction. No such transfer was found, and it was concluded that a modification of the constancy of visual direction does not consist in an altered evaluation of kinesthetic cues for head turning. The method and the equipment used in the investigation of the constancy of visual direction are described; knowledge of the previous brief publications on this topic is not needed.     

Personality disorder as harmful dysfunction: DSM'S cultural deviance criterion reconsidered

The DSM's general criteria for personality disorder (PD) attempt to define PD versus nondisordered personality conditions. If dimensionalization of PD occurs in the DSM-V (perhaps, it is suggested, with PD diagnosis moved to Axis I and overall personality assessment in Axis II, thus separating diagnosis from case formulation), general criteria likely will still be needed to prevent massive false positives. In this article, one of the general criteria, the cultural deviance requirement (CDR), is examined from the perspective of the evolution-based harmful-dysfunction analysis of disorder. The CDR is often assumed to express value relativity of harm in diagnosis, but cultural values are a designed feature of human social functioning that influence personality formation. The CDR is thus argued to be an indicator of whether an individual's personality organization is due to an evolutionary dysfunction. Value relativity and evolutionary analysis thus converge.     

A pound is a pound is a pound

According to the relevant alternatives theory of knowledge (RA), I know that p only if my evidence eliminates all relevant alternatives to p. Jonathan Schaffer has recently argued that David Lewis's version of RA, which is perhaps the most detailed version yet provided, cannot account for our failure to know in cases involving missed clues, that is, cases in which we see but fail to appreciate decisive evidence. I argue, however, that Lewis's version of RA survives exposure to missed clue cases. Moreover, even though Schaffer maintains that Lewis's Rule of Belief provides no protection against missed clue cases, I argue that we should credit the Rule of Belief with ensuring the survival of Lewis's version of RA.