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PubMed1990

Comparison of Nigerian high school male athletes and nonathletes on self-concept.

Nigerian high school athletes (112 high and 90 low in performance) and 108 nonathletes were administered the Tennessee Self-concept Scale. Athletes scored significantly higher on all self-concept subscales except behavior, moral-ethical and family. Better athletes scored significantly higher on all aspects of self-concept: social, moral-ethical, family and behavior, as is consistent with findings from the USA and other countries.

Adolescent↗
PubMed1990

Self-concepts of disabled youth athletes.

A self-concept inventory was administered to 158 youth athletes, ages 9 to 18 yr. (M = 13.94 yr., SD = 2.63) who competed in the first Pan American Victory Games for Physically Disabled Youth. Disabilities represented were blind (n = 57), cerebral palsy (n = 52), dwarfs (n = 18), spinal cord injured (n = 12), amputation (n = 10), and les autres (n = 9). The purpose was to examine the self-concepts of disabled youth athletes and begin a data base. Analysis indicated that mean self-concept scores fell within or were close to ranges of means for able-bodied youth, as given in the test manual.

Adaptation, Psychological↗
PubMed1991

Comparison of self-concepts of students identified as gifted and regular students.

The purpose of the present study was to compare the self-concepts of 40 eighth grade students identified as gifted and 40 regular eighth grade students using the Piers-Harris Children's Self-concept Scale. A t test indicated a significant group difference on the behavior component only and no significant differences by gender. More similarities than differences were noted in self-concepts of these students identified as gifted and regular students.

Adolescent↗
PubMed1992

Effects of aerobic and nonaerobic exercise on depression and self-concept.

The effects of aerobic and nonaerobic exercise on depression and self-concept were investigated in a pretest-posttest control group design. 89 undergraduates engaged in the aerobic exercise of swimming, the nonaerobic exercise of weight training, or a control, Introductory Psychology class. Dependent measures were the Beck Depression Inventory, Depression Adjective Check Lists, Tennessee Self-concept Scale, and Cooper's 12 Minute Swim. Analysis indicated that both the aerobic and nonaerobic groups were equally effective in significantly reducing self-reported depression in comparison to the controls. The nonaerobic condition was superior to the aerobic condition for enhancing self-concept. These results contradict earlier findings suggesting that only aerobic types of exercise yield psychological benefit but are consistent with more recent findings showing the psychological benefit of nonaerobic exercise.

Adult↗
PubMed1998

Effects of a movement and swimming program on water orientation skills and self-concept of kindergarten children with cerebral palsy.

In this study the effect of an experimental movement and swimming program of six months on motor function in the water measured by means of the Water Orientation Score and self-perception measured by means of the Martinek-Zaichkowsky Self-concept Scale was investigated. 23 children participated in the program, completing both tests prior to and after the intervention. An age-, sex-, and disability-matched control group of 23 children completed only the Self-concept Scale at pre- and posttest. Analysis indicated a significant improvement in Water Orientation Score of children in the trained group, but no effect on scores of the Self-concept Scale.

Cerebral Palsy↗
PubMed1990

Classroom environment and locus of control in identifying high and low self-concept in fourth- and fifth-graders.

This study examined classroom environment and locus of control in identifying successfully children showing high and low self-concepts. In their respective intact classrooms, 107 fourth- and fifth-graders were administered the Piers-Harris Children's Self-concept Scale, the Classroom Environment Scale, and the Nowicki-Strickland Children's Locus of Control Scale. A stepwise discriminant analysis indicated that four variables in combination successfully classified 76% all cases, suggesting the importance of environmental factors associated with classrooms and locus of control in identifying self-concepts of children of elementary-school age.

Child↗
PubMed1991

Self-concepts of mothers who show mental retardation.

The Tennessee Self-concept Scale was orally administered to 27 mothers with mental retardation and self-administered to 95 mothers whose children attended daycare in the areas in which the former mothers lived. Analyses showed that the mothers with mental retardation scored significantly lower on all subscales. Where 72% of the comparison group scored above a recommended cut-off indicative of a positive self-concept, only 33% of the mothers with mental retardation did. Comparisons of the 27 mothers with mental retardation (18 with positive versus 9 with negative self-concepts) on personal, child, family, and other background variables suggested different relationships for the two groups. Cross-validation of the present work and studies of the actual childcare of these latter two groups of mothers are needed.

Adult↗
PubMed1995

Gender differences in teachers' behaviors in relation to adolescents' self-concepts.

Gender differences in the relationship between teachers' behaviors and adolescents' self-concepts were investigated in 276 (156 boys and 120 girls) Standard Ten students from two coeducational high schools in Langa, Cape Town, South Africa. The Perceived Teacher Behavior Inventory was used to measure adolescents' self-concepts. Analysis indicated significant differences in perceived teachers' behavior and adolescents' self-description scale scores between boys and girls. Further, students' self-concept dimensions most strongly associated with teachers' behaviors were relations with family, general school, and health.

Adolescent↗
PubMed2001

University students' conceptions of first-year mathematics.

The 1998 Crawford, Gordon, Nicholas, and Prosser Conceptions of Mathematics scale was administered to 156 first-year university students at a large public university in the midwestern United States. The scale represented fragmented and cohesive conceptions of mathematics. The reliability estimated as internal consistency had a Cronbach alpha of .80 for the fragmented scale and .87 for the cohesive scale. Factor analysis of the intercorrelations indicated the same two factors of fragmented and cohesive as in the original and other replicating studies. Students' conceptions of mathematics in this study were comparable to those reported in the original study.

Adolescent↗
PubMed2002

Sex differences in the personal conceptions of intelligence: particularities of the Portuguese cultural context.

Several empirical studies have implicated helplessness as a problem in girls' lack of achievement, generally associated with static conceptions of intelligence. Yet, two studies aiming to explore sex differences in personal conceptions of intelligence, carried out with Portuguese samples of 222 and 2,106 subjects, respectively, using a 15-item rating scale to measure personal conceptions of intelligence adapted for Portuguese adolescents (11 to 17 years old), did not find sex differences, suggesting that certain specific characteristics of the Portuguese cultural context and its underlying socialization processes may have altered the expected kind of differentiation. Researchers should investigate whether success is not stereotypically attributed to male role norms and the importance of arousal of standards of achievement for women in the Portuguese culture.

Achievement↗
PubMed2006

A group intervention to promote healthy self-concepts and guide recovery in first episode schizophrenia: A pilot study.

The stress associated with managing a first episode of schizophrenia and the secondary psychological sequelae may predispose young people to the phenomenon of illness engulfment, whereby personal identity is lost and replaced with a sense of self defined entirely by the illness. The overall objective of this pilot project was to provide an initial evaluation of the impact of a novel group intervention targeting improvement of self-concept (engulfment) and overall quality of life for young adults recovering from a first episode of schizophrenia. Fifty-two young adults diagnosed with a DSM-IV schizophrenia spectrum disorder were sequentially assigned to either a 12-week group intervention that provided members with opportunities to attain healthy self-concepts or a control group that received high quality treatment as usual. The two groups were compared on pretreatment, post-treatment, and 3-month post-treatment measures of engulfment, quality of life, and psychiatric symptoms. Allowing for dropouts, 26 subjects remained in the treatment group and 14 subjects in the control group after the 3-month follow-up. Participants in the treatment group demonstrated significant improvement in engulfment, quality of life (intrapsychic subscale) and symptoms, while the comparison group did not change. These preliminary results provide support for the benefits of a group intervention designed to enhance self-concept and to minimize the engulfing effects of illness.

Adaptation, Psychological↗
PubMed1981

Effects on self-concept in two different alcoholism treatment programs.

Ninety-six male alcoholics were tested before and after a 4-week residential rehabilitation program. One-half of the subjects were residents of a VR treatment center which stressed development of internal controls and the attribution of responsibility to self. The other half were patients at a VA hospital which fostered considerable dependency and reliance on external controls. Change in self-concept was assessed by the Tennessee Self-Concept Scale (TSCS). A Locus of Control of Drinking Behavior Scale (LCDB) was also administered. Positive changes occurred across settings on 9 of 17 self-concept variables. However, there were four variables on which a differential change occurred. These setting-by-treatment interactions are discussed in terms of the treatment philosophy of the two programs.

Alcoholism↗
PubMedDate not supplied

Self-concept, marital vulnerability and brain damage.

The present study investigated the influence of a man's brain injury on both his and his wife's self-concept and perception of marital vulnerability. Thirty-six couples in which the husbands had brain damage and twenty-nine couples without disability filled out the Tennessee Self-concept Scale [1], and the Marital Vulnerability Scale [2]. Marital vulnerability of husbands with brain damage was found not to differ from that of the husbands in the control group. However, the marital vulnerability of the wives of the former husbands was lower than that of the other wives. Both men with brain damage and their wives exhibited a decrease in self-esteem and an increase in conflict and pathology. Brain damage appears to affect both the extent and direction of the relations between aspects of the self-concept and marital vulnerability differentially for husbands with brain damage and their wives. Practical and theoretical implications of the negative impact of brain damage upon the person with the damage, upon his wife, and upon their marital relationship are discussed.

Adaptation, Psychological↗
PubMed2026

Accounting for voluntary waiting period changes in US dairy herds: Adjusting daughter pregnancy rate and introducing first-service to conception.

The genetic evaluation of female fertility traits in dairy cattle in the United States has progressed over the past 2 decades, with 4 additional traits integrated into the national evaluation system since the introduction of daughter pregnancy rate (DPR) in 2004. However, concerns have arisen in the dairy sector, with reports of producers extending the voluntary waiting period (VWP), which is the time of initial breeding after calving, due to more persistent lactation yields. Since its inception, DPR calculations in the US evaluation have assumed a fixed 50-d VWP, which may not reflect modern reproductive strategies. Furthermore, producers may determine that some of their cows should have their VWP extended while others may follow the standard time. A re-evaluation of the current female fertility evaluation is necessary to ensure traits align with current management practices. Therefore, this study explores the addition of a potential new trait, First Service to Conception (FSC), along with a revised DPR formula that permits more flexibility with VWP. About 32 million records from the National Cooperator Database, covering 5 major dairy breeds (2003-2023), were used for this study. Data for cows calving before 2003 were unavailable because insemination records were not recorded prior. The findings suggest FSC enhances female fertility evaluations, providing a more comprehensive reproductive assessment independent of VWP. Another approach was an adjustment to the DPR calculation (DPRadj) to account for herd VWP on a herd-year and lactation group basis. The mean DPR value was 45.06%, while DPRadj increased the mean value to 52.58%. The mean FSC was 62.64 d. In an analysis using first lactation cows for cow traits and heifers for heifer traits, genetic correlations of FSC with other fertility traits were 0.97 with Cow Conception Rate (CCR) and DPR, 0.98 with DPRadj, 0.40 with Heifer Conception Rate (HCR), and 0.32 with Early First Calving (EFC). Predicted transmitting abilities (PTA) were calculated to assess the implications of adding FSC to, or replacing DPR with DPRadj within the CDCB multi-trait evaluation index, Net Merit $ (NM$). The highest correlation among the top 10% of bulls occurred when replacing DPR with DPRadj (0.99). Adding FSC to the original model reduced the latter correlation to 0.88, which indicates slight re-ranking of top bulls. Among animals with PTA reliability above 50%, the lowest correlation was between the original index and the index replacing DPR with FSC (0.95). This work advances genetic evaluation in dairy cattle, improving reproductive efficiency and productivity.

daughter pregnancy rate↗
PubMed1997

Conceptual combination: conjunction and negation of natural concepts.

The operation of negation on combinations of natural categories was examined in two experiments. In the first, category membership ratings of lists of items were obtained for pairs of concepts considered individually and in two logical combinations: conjunctions (e.g., "Tools which are also Weapons") and negated conjunctions--forms of those conjunctions in which the modifier noun category was negated ("Tools which are not Weapons"). For conjunctions, results supported earlier findings of overextension and the geometric averaging of constituent membership values (Hampton, 1988b). Previous findings of concept dominance and noncommutativity within conjunctions were also replicated, both for typicality ratings and for probability of class membership. For negated conjunctions, the pattern of dominance was similar but interacted with order within the conjunction. Negated conjunctions were also overextended. The second experiment explored how the attributes of negated conjunctions were derived from those of the two component concepts. Frequency of generation of attributes expressed positively (has wheels) or negatively (has no wheels) followed rated frequency in the negated category. The distinctiveness of an attribute to distinguish the complement from the head-noun class was associated with the generation of attributes, particularly when there was relatively high overlap between the two categories.

Concept Formation↗
PubMed2000

Interactive property attribution in concept combination.

We address the question of how people understand attributive noun-noun compounds. Alignment-and-comparison models suggest that the similarity of the constituent concepts guides interpretation. We propose, as an alternative, an interactive property attribution model wherein the modifier and head concepts have different functions: The head provides relevant dimensions, whereas the modifier provides candidate features for attribution. According to our model, the interaction of dimensions and features, rather than constituent similarity, guides interpretation. In this study, we empirically contrasted the two models by holding constituent similarity of compounds constant while varying the interaction of modifier feature salience and head dimension relevance. Compounds consisting of a head concept with a relevant dimension for attribution and a modifier with a salient property on that dimension were interpreted by means of property attribution. Other compounds with equivalent constituent similarity, but lacking the high salience-relevance interaction, were not interpreted by means of attribution. The interactive property attribution model more accurately predicted interpretation of noun-noun compounds.

Adult↗
PubMed2002

Striatal activity in concept learning.

Striatal learning systems have been implicated in learning relationships between visual stimuli and outcomes. In the present study, the activity of the striatum during visual concept learning in humans was examined by using functional magnetic resonance imaging (fMRI). Participants performed three concept-learning tasks and a baseline task. The participants were trained to criterion before fMRI scanning on two tasks, verbal and implicit. In the verbal task, classification could be performed on the basis of a simple verbal rule, but in the implicit task, there was no simple verbal rule. The novel-implicit learning task, in which an implicit structure was used, was not encountered by the participants before scanning. Across all three concept-learning tasks, there was significant activation in the striatum, in comparison with the baseline task. The striatum was recruited similarly in classification when the participants had different levels of expertise (novel-implicit vs. verbal and implicit) and were able to verbalize their learning to different degrees (verbal vs. implicit and novel-implicit). There was left lateral occipital activation when learning was implicit (implicit and novel-implicit), but not when learning was easily verbalized (verbal).

Adult↗
PubMedDate not supplied

Concept mapping: promoting science learning in BN learners in Australia.

BACKGROUND: We reviewed the process of using concept mapping as a methodology to teach science to RNs in a bachelor degree of nursing program in Australia. METHOD: The technique was used for two classes of students in the science unit during 1995 with work packages and independent student learning being the focus of the unit. RESULTS: Both instructors and students found the experience mainly positive. It helped the students become more independent learners, have a greater confidence in their knowledge of science, and allowed their understanding of science in their practice to become more meaningful and personalized. For the instructors it allowed them to concentrate on students with learning difficulties because they had less face-to-face teaching hours. Major issues arising from the process related to how to balance science content and the techniques of concept mapping and how to more effectively assess the learning outcomes of the students. CONCLUSION: Concept mapping is a useful technique to link science and nursing practice. Not only can it be used in academic programs to teach the science underlying practice, it can be used in the clinical area to teach patients. As a technique it works well in staff development and continuing education where the focus is on elucidating the rationale for inuring practice and providing evidence for the value of this practice.

Australia↗