Automated Measurement of Mouse Freezing Behavior and its Use for Quantitative Trait Locus Analysis of Contextual Fear Conditioning in (BALB/cJ × C57BL/6J)F2 Mice

The most commonly measured mouse behavior in fear conditioning tests is freezing. A technical limitation, particularly for genetic studies, is the method of direct observation used for quantifying this response, with the potential for bias or inconsistencies. We report the use of a computerized method based on latency between photobeam interruption measures as a reliable scoring criterion in mice. The different computer measures obtained during contextual fear conditioning tests showed high correlations with hand-scored freezing; r values ranged from 0.87 to 0.94. Previously reported strain differences between C57BL/6J and DBA/2J in context-dependent fear conditioning were also detected by the computer-based system. In addition, the use of computer-scored freezing of 199 (BALB/cJ×C57BL/6J)F₂ mice enabled us to detect a suggestive gender-dependent chromosomal locus for contextual fear conditioning on distal chromosome 8 by QTL analysis. Automation of freeze scoring would significantly increase efficiency and reliability of this learning and memory test.     

Augmenting Computer-Interactive Self-Assessment with and Without Feedback

The Psychological Record - Following a preexperimental assessment of computer-interactive math performance during VR 6 reinforcement and extinction, 4 regular education students and 2 students...     

Case study: Noninvasive behavioral treatment of self-injurious hand stereotypy in a child with Rett syndrome

Treatment of stereotypic hand mouthing in a 3-year-old girl with Rett syndrome by differential reinforcement of competing functional responses plus response interruption is described and evaluated in this case study. A package of graduated guidance with social and edible reinforcers successfully established stable rates of functional hand movements to activate toys, gross motor responses to verbal prompts, palmar grasp and release, and some vocal imitation. Contingent response interruption virtually eliminated hand mouthing during instructional sessions. Instruction alone did not maintain hand mouthing suppression when interruption was withdrawn, and treatment gains appeared highly discriminated. Post-hoc comparison indicated differential reinforcement plus response interruption (DR1 + 1) to be superior to hand splints in reducing hand stereotypies, with approximately equivalent increases in collateral tongue thrusting.     

Justifications of Aggressive Behavior in Contact and Semicontact Sports

The present study examines the extent to which athletes in selected contact and semicontact sports report agreement or disagreement with the use of intentional acts of aggression during competition. Eighty-five male athletes responded to the Bredemeier Athietic Aggression Inventory-Short Form and the Mintah Huddleston Aggression Justification Inventory. Overall results revealed no significant differences between subjects' use of hostile and instrumental aggression in sport and between the hostile and instrumental justifications provided for such behavior. Results indicated that contact-sport participants disagree more with the use of instrumental aggression than semicontact-sport participants.     

A modern psychoanalytic approach to caregiver support groups

Caregiver support groups traditionally focus on education, reduction of social isolation, and supportive sharing. However, the support group literature has increasingly reflected an interest in the emotional effects of caregiving. While some authors promote the therapeutic value of supporting defenses against painful feelings, others have documented the value of encouraging their expression in groups. This paper is based on the author’s experience in co-leading an Alzheimer’s family support group, using a modern psychoanalytic approach which encourages the full expression of the caregivers’ emotional experience. Using emotional communication to explore resistances to intimacy and aggression in groups, the author demonstrates how the interplay of co-leadership and Modern Psychoanalytic theory and techniques promotes group cohesion and encourages maturational growth in group members. This model is also prescribed as an antidote to leader “burnout,” a not uncommon phenomenon for leaders of such emotionally charged groups. Private Practice, New York, New York.     

Neuroanatomically separable effects of imageability and grammatical class during single-word comprehension

The present study characterizes the neural correlates of noun and verb imageability and addresses the question of whether components of the neural network supporting word recognition can be separately modified by variations in grammatical class and imageability. We examined the effect of imageability on BOLD signal during single-word comprehension of nouns and verbs. Subjects made semantic similarity judgments while undergoing functional magnetic resonance imaging (fMRI). Nouns and verbs were matched on imageability, and imageability varied continuously within a grammatical category. We observed three anatomically separable effects: a main effect of grammatical class, a main effect of imageability, and an imageability by grammatical class cross-over interaction. The left superior parietal lobule and a region in the left fusiform responded similarly to increases in noun and verb imageability; the left superior temporal gyrus showed greater activity for verbs than nouns after imageability was matched across grammatical class; and, in both the left middle temporal gyrus and the left inferior frontal lobe, a decrease in noun but not verb imageability resulted in higher BOLD signal. The presence of reliable and anatomically separable main effects of both imageability and grammatical class renders unlikely the hypothesis that previously reported dissociations between nouns and verbs can be dismissed as imageability effects. However, some regions previously thought to respond to grammatical class or imageability instead respond to the interaction of these variables.     

Implementation of the Sound Partners Reading Program

Eleven first grade and 10 second grade students, all with reading and behavioral difficulties, received one-on-one tutoring using the Sound Partners reading program (Vadasy & Pool, l997). Students received 30 min of tutoring each day for 5 months. Students were assessed on Letter-Word Identification, Passage Comprehension, and Word Attack subtests of the Woodcock-Johnson-Revised (WJ-R): Tests of Achievement. An informal measure (rapid letter naming) was also used. Results indicated that gains of approximately 1 standard deviation (or greater) were noted for subtests of the WJ-R for first-grade students; second graders showed relatively stable performance from pre- to posttest assessments. Similar performance was noted on the informal measure across grades. Program satisfaction data showed that overall the tutors, teachers, and students were pleased with the program. Discussion focuses on the implications for future investigations.     

Gender Differences in Playful Aggression During Courtship in College Students

The current study explored gender differences in college students' definitions and enjoyment of playful force and aggression. Ninety-six female and 55 male college students who were predominantly White (96%) and heterosexual (97%) answered questions about playful force during sex and playful aggression at other times. A content analysis showed that the current definitions were very similar to those for children's rough-and-tumble play. However, a qualitative analysis found several potential gender differences. Physically aggressive men appeared to give aggressive definitions of playful force during sex. In addition, there was some disagreement among participants as to the acceptability of playful force during sex. Finally, there may be gender differences in the assumed agency of playful force and aggression.