Brain Potential Studies of Perseveration: I. Perseveration Time to Light

In an effort to investigate the effects of attachment to the dominant culture and of developmental level on the self-concept, 62 male Lebanese-Americans of first, second, or third generation of residence in America completed two forms (questionnaire and adjective checklist) of an instrument designed to measure self-image disparity. A series of questions was used to measure extent of attachment to the Lebanese subculture, and a social competence index was employed as the measure of developmental level. No effects associated with self-image disparity emerged for generation of residence or developmental level. However, subjects who were strongly attached to the Lebanese culture showed less disparity on the questionnaire than those who were detached from it. Some support was provided for the developmental position, since Low Competence Ss made larger numbers of extreme responses on the questionnaire than the High Competence S.     

Perseveration in Normal Aging: A Comparison of Perseveration Rates on Design Fluency and Verbal Generative Tasks

Three generative tasks (design generation, animal naming, words starting with m) from the Cognitive Linguistic Quick Test were administered to 73 healthy individuals in four age groups (18–39, 40–59, 60–74, 75–88) and scored for perseveration and productivity. Perseveration rates for design generation were significantly higher, and increased linearly as a function of age. The number of individuals who perseverated at least once on design generation also increased linearly, with highest prevalence in the oldest group. No age effects were found for perseveration on the verbal naming tasks. Perseverations across tasks were independent of one another. The design generation task may require multiple simultaneous processing skills, placing more demand on compromised executive processing in the elderly.     

A Note on Racial Difference in Perseveration

An investigation of the relationship between achievement motivation and ethnic composition of schools was undertaken in order to determine if the integrated experience would facilitate achievement motivation among black students. The Edwards Personal Preference Schedule was administered to male and female high school students: 20 black and 37 white students attending an ethnically mixed school, 29 students attending a segregated school with 100% black enrollment, and 49 students attending a segregated all white school. Scores on the need for achievement subscale revealed a significant interaction (p < .01) of school system by race which indicated that students in the mixed school were more similar in their scores and closer to the national norms for that subscale than students in the segregated schools. In addition there was a main effect for race (p < .0001) which indicated that black students had significantly higher scores than white students regardless of the type of school system. There was no main effect for school system. A tentative conclusion proposed that the scores of integrated black students represented more realistic aspirations than did those of segregated black students.     

The Roles of Persistence and Perseveration in Psychopathology

Two constructs were hypothesized to be of importance in psychological disorders: persistence (the ability to keep going to reach a goal, even when the task is difficult or drawn out) and perseveration (the tendency to continue a behavior, even when it ceases to be effective or rewarding). These are contrasted with perfectionism (having high standards for oneself or others). A measure was developed to address these constructs (the Persistence, Perseveration and Perfectionism Questionnaire; PPPQ). The PPPQ was administered to 325 nonclinical participants, alongside a measure of psychological disturbance. Factor analysis resulted in a 22-item version of the measure, consisting of subscales with good psychometric properties corresponding to the 3 theoretical constructs. Persistence was associated with lower levels of psychopathology, whereas perseveration was associated with higher levels of psychopathology. Perfectionism was weakly associated with psychopathology. Further work is needed to develop these constructs with clinical groups, but the findings support the hypothesis that persistence is an adaptive construct whereas perseveration is maladaptive.     

Representation and Perseveration: Influences on Young Children's Representational Insight

We carried out 3 experiments to determine what role different task demands play in 2.5-year-old children's performance on DeLoache's (1987) model-room task. The results of Experiment 1 reveal that the size of the toy to be retrieved had little bearing on performance; only the size of the spaces affected performance. Experiment 2 demonstrated that the large number of perseverative errors produced by children in these tasks was not reduced when the toy on each of the 4 test trials was changed and, thus, further suggested that characteristics of the toy had little influence on performance. Experiment 3 showed that elimination of the possibility of perseverative response through removal of the previously used hiding locations did not facilitate transfer. The results point to conceptual inflexibility or difficulty of engagement in dual representation associated with the search space as important contributors to the lack of representational insight demonstrated by 2.5-year-old children.     

Perseveration of cardiac-rate effects in the rhesus monkey following pavlovian conditioning

The effects of Pavlovian conditioning on diurnal cardiac rate were studied in four rhesus monkeys. A three-hour conditioning period, consisting of 18 CS-UCS pairings with UCS an aversive tail-shock, produced cardiac-rate elevation which persisted for as long as 12 hours after the session.     

Covariates of Production and Perseveration on Tests of Phonemic,Semantic and Alternating Fluency in Normal Aging

ABSTRACT

Standard measures of phonemic and semantic fluency, as well as fluency measures that impose additional demands upon set-switching were administered to younger and older adults. No age effect was found for total output on semantic fluency, while older participants generated significantly more responses relative to their younger counterparts on the phonemic measure. However, older adults made significantly more perseverative errors on both these measures. For tests of alternating fluency, only where participants were required to switch between two semantic dimensions, was an age deficit observed. Although the correlation between phonemic repetitions and age remained significant when performance on the Digit Symbol Test or a measure of fluid intelligence was partialled out, age effects for semantic repetitions and semantic alternating fluency were substantially reduced. The age benefit for number of correct responses upon phonemic fluency was significantly attenuated when a measure of crystallized intelligence was entered as a control variable. The theoretical and practical implications of these results are discussed.     

Perseveration in congenitally blind children: Effects of luminous and acoustic targets on a modified A-not-B task

The purpose of this study was to determine whether or not blind children perseverate during a modified Piagetian A-not-B reaching task, with conditions that employ luminous AB targets and acoustic AB targets. Ten congenitally blind children, ages 1–4 years, with residual vision for light, took part in this study. Behavioral and kinematic data were computed for participants’ reaches, performed in six A trials and in two B trials, in both stimulus conditions. All of the children perseverated in the luminous condition, and none of them perseverated in the condition using acoustic targets. The children tilted their heads in the direction of the target as they reached towards it. However, this coupling action (head-reaching) occurred predominantly in the A trials in the acoustic condition. In the luminous condition, in contrast to the acoustic condition, the children took longer times to initiate the reaching movement. Also, in the luminous condition, the children explored the target surroundings, unlike the acoustic condition, in which they reached straight ahead. For these blind children, sound was more relevant to reaching than was the luminous stimulus. The luminous input caused perseveration in congenitally blind children in a similar way that has been reported in the literature for typically-developing, sighted infants, ages 8–12 months, performing A-not-B tasks with visual inputs.