An evaluation of recollection and familiarity in Alzheimer’s disease and mild cognitive impairment using receiver operating characteristics

There is a need to investigate exactly how memory breaks down in the course of Alzheimer’s disease (AD). Examining what aspects of memorial processing remain relatively intact early in the disease process will allow us to develop behavioral interventions and possible drug therapies focused on these intact processes. Several recent studies have worked to understand the processes of recollection and familiarity in patients with mild cognitive impairment (MCI) and very mild AD. Although there is general agreement that these patient groups are relatively unable to use recollection to support veridical recognition decisions, there has been some question as to how well these patients can use familiarity. The current study used receiver operating characteristic (ROC) curves and a depth of processing manipulation to understand the effect of MCI and AD on the estimates of recollection and familiarity. Results showed that patients with MCI and AD were impaired in both recollection and familiarity, regardless of the depth of encoding. These results are discussed in relation to disease pathology and in the context of recent conflicting evidence as to whether familiarity remains intact in patients with MCI. The authors highlight differences in stimuli type and task difficulty as possibly modulating the ability of these patients to successfully use familiarity in support of memorial decisions.     

Skilled speechreading: A single-case study

In a case study the cognitive characteristics of a skilled visual speechreader (SJ) was examined and compared to a control group. SJ is a 56 year old woman, skilled in visual speechreading. She differs from most of the 119 individuals in the control group, as she uses a particular speechreading strategy in which she attempts to repeat overtly each spoken word as soon as it has been uttered, and to summarize and fill in missing pieces of information whenever it is possible (e.g., during pauses) during the conversation.
SJ outperformed the control group on three types of tasks; a reading span task, performance in the asymptote level in the serial position curve, and verbal inference-making. SJ's results were discussed with respect to (a) how they relate to the general case (i.e., models based on group-data) and to (b) her speechreading strategy. From a clinical perspective it was suggested that it might be possible to practice the strategy as such, but any possible improvement is dependent on the individual's capability to process information in this way.     

数字记忆广度对策略应用模式的影响──中美儿童计算能力差异的比较研究

本研究旨在了解中美儿童在策略运用模式上的差异是否与数字记忆广度有关。为此,分别测验了中美幼儿园儿童的加法技能,数字记忆广度,并通过一组计算机呈现的加法作业评估儿童使用的解题策略。结果表明,中国儿童的基本算术技能和数学记忆广度均超过同龄的美国儿童。在解题时,中国儿童多使用效率较高的言语计算策略,美国儿童则多采用计数手指策略,在言语计数策略和检索策略的加工速度上中国儿童也超过美国儿童。相关分析表明．策略应用模式的文化差异与数字记忆广度有关。比较大的工作记忆容量增加了数字线索可利用的资源,为儿童早期言语计数能力的发展提供了有利条件。     

Assessing children's social skills: Validation of the Behavioral Assertiveness Test for Children (BAT-C)

The present study assessed the relationship between specific child responses on the Behavioral Assertiveness Test for Children (BAT-C) and sociometric indices obtained from peers. Fourth and fifth graders completed peer nominations of their best friends and the children they most admired, peer ratings of likeability, and the BAT-C. Sociometric status was determined by classifying each child as either high or low on peer nominations and peer ratings. Examination of the effects of sociometric status as moderated by race and sex revealed several significant differences in BAT-C responses. Children who were more highly liked or were often named as best friends were significantly less compliant. Differential responding on several additional verbal categories was observed as a function of the interaction between sociometric status and race and/or sex. These findings not only demonstrate the validity of several response categories observed on the BAT-C, but also suggest that in social skills training, different component responses may be targeted across child populations.The authors wish to express their appreciation to Jean Birbilis, Candace Conley, Tony Genoff, Marieta Knopf, and Donna Wadley for their assistance in data collection and analysis.     

LEISURE-DANCE INSTRUCTION FOR SEVERELY AND PROFOUNDLY RETARDED PERSONS: TEACHING AN INTERMEDIATE COMMUNITY-LIVING SKILL

We evaluated an approach for teaching an intermediate community living skill via a leisure-dance activity to institutionalized severely and profoundly retarded persons. The targeted skill was considered as intermediate in contrast to a community living skill per se because it was based on successful performances of higher functioning, noninstitutionalized retarded persons as opposed to nonhandicapped individuals. Definitions for appropriate dancing were established and then validated through observations of the performance of retarded persons living in the local community. The dance skills were then taught to four participants through serial training in leg movements, arm movements, and coordinated leg and arm movements, plus follow-up trainer supervision. Generalization was also programmed by way of multiple trainers and training settings. Results during structured assessments showed that all four residents acquired the dance skills and that both serial training and follow-up supervision were necessary for skill acquisition. Generalized increases in appropriate dancing at dances attended by the participants and retarded persons from the community were also demonstrated. However, in most cases some active supervision by caregivers was needed to enhance the generalized improvements. Results are discussed in terms of the applicability of this approach for validating goals when training other community-related skills to low-functioning populations.     

Teaching chained skills in a non-school setting using a divided half instructional format

This investigation evaluated the use of dyadic instructional arrangements in teaching chained skills to four students with moderate mental retardation. Each instructional dyad consisted of two students. Each of the three cooking skills was divided into two equal parts, and each student in a dyad received direct instruction on one part of the task analysis during each instructional session. During the following session, the two parts were reversed and a student received instruction on the second part. A constant time delay procedure was used to teach the targeted skills in an off-campus setting. A multiple probe design across skills and replicated across students evaluated the effectiveness of the instructional procedure and teaching arrangement. Results indicate that each of the four students learned the three cooking skills. Implications for future research are discussed.     

Validation of a component model of social skill with outpatient adults

Little social skills research has been generated from applied outpatient settings. The present study examined the relationship of behavioral social skill components to independent judges' social skill judgments. A secondary question was whether nonverbal components would demonstrate a curvilinear relationship to social skill ratings. Forty-two outpatient adults at a community mental health center were videotaped role-playing eight scenes (four commendatory and four refusal). Videotapes were viewed in random order by community members who rated the subject's social skill in the situation. Trained raters scored the videotapes on standard behavioral components. While both nonverbal and verbal components accounted for significant portions of unique variance, the percentage of eye contact was an overwhelmingly large contributor to skill judgments. No curvilinear trend was evidenced for the nonverbal components. The study extended prior findings with psychiatric inpatients into applied outpatient settings and indicated that a component social skills model is equally applicable with outpatient adults. The findings replicated with a second sample of outpatient adults.     

Cognitive processes among skilled miniature golf players: Effects of instructions on motor performance, concentration time, and perceived difficulty

Highly skilled miniature golf players were examined on a simplified miniature golf task under different instructional conditions. Results indicated that requirements to attend to a variety of technical aspects of the game during preparation impaired motor performance, whereas providing players with those aspects of the game they reported thinking of did not affect motor performance. Data on concentration time and perceived difficulty indicated that increasing cognitive demands were associated with a decline in motor precision. The overall pattern of results was interpreted such that attention directed at technical aspects of the game interfered with the players' normal cognitive activity. Susceptibility to interference is a characteristic feature of controlled cognitive operations. Thus, the present results are consistent with the view that conscious cognitive activity may support motor behavior also at late stages of skill development.     

Group instruction with profoundly retarded persons: acquisition, generalization, and maintenance of a remunerative work skill.

We evaluated a group instruction program for teaching a vocational skill to profoundly retarded adults. The program involved designated trainer roles and both individual student-directed and total group-directed procedures. Results indicated that, following the program, participants acquired the skill of stamping addresses on envelopes, the skill generalized across an untrained type of envelope, and the skill maintained over time. The group activity was incorporated into the regular classroom without increased disruption and the participants earned a wage for their productivity. Implications for the development of a group instruction technology for severely handicapped persons are discussed.     

Measuring social skill in grade school boys

This study examined positive and negative assertive skill in 60 elementary school boys, grades 3–8. Subjects' role-played responses to standard analogue situations requiring expression of positive and negative assertion were videotaped and rated retrospectively. High- and low-assertive subjects were identified through ratings of overall assertiveness. Results of this study indicate that (1) high- and low-assertive subjects differ on a number of response components which are related to age level and type of assertive situation (positive vs. negative), (2) assertive skill is associated with role-taking (or decentering) ability, (3) teachers tend to perceive their assertive boys as more sociable and interpersonally sensitive than unassertive boys, (4) there is essentially no correlation between teachers' ratings of aggressiveness and separate behavioral ratings of assertive skill, and (5) behavioral ratings of assertiveness show little relationship to self-report or teachers' ratings of assertiveness.This article is based on a dissertation submitted to the Faculty of the Graduate School of Loyola University of Chicago in partial fulfillment of the requirements for the Degree of Doctor of Philosophy. The study was conducted under the direction of the second, third, and fourth authors.