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PubMed1979

Effects of learning to ski on the self-concept of mentally retarded children.

Changes in the self-concept of TMR children as a function of experience in a physical activity program were evaluated. The self-concept of a group of students was measured before and after participation in a 5-week ski program. A control group received similar pre- and postmeasures of self-concept but did not participate in the ski program. Significant changes in self-concept occurred among students in the experimental but not the control group. Furthermore, the magnitude of success in learning to ski was shown to be positively and significantly correlated with magnitude of change in self-concept.

Education of Persons with Intellectual Disabilitie↗
PubMed1977

The self concept of the adolescent with learning disabilities.

The Coopersmith Self Esteem Inventory (CSEI) was administered to 23 Ss diagnosed to have learning disabilities, and normally achieving seventh graders (N = 70) to investigate: a) whether differences exist between the self-esteem of the adolescent with learning disabilities and the normally achieving adolescent, b) the dimensions of self concept in which these differences occur, and c) the relationship between self concept and the number of years in the special classroom for the adolescent with learning disabilities. The data were fitted to a 2 X 2 (ability X school) fixed effects non-orthogonal multivariate analysis of variance model. A significant difference (p less than .05) in "social self-peer" self concept favoring the "normally" achieving S's was found. A trend was evidenced for more negative "general self" and "school-academic" self concepts for the learning disabilities sample. Number of years in the special class did not appear associated with self concept as measured by the CSEI.

Achievement↗
PubMed1980

Effects of a training program on teacher behavior and handicapped children's self-concepts.

The purpose of this research was to assess the effectiveness of the revised Utah State University Self-Concept Protocol Program in changing teacher behaviors presumed to be related to pupil self-concept. This program was focused on teachers with handicapped pupils in mainstreamed classrooms (grades 4 through 6). Ten volunteer teachers were trained in the self-concept behaviors as part of an inservice course. Eight additional volunteer teachers served as a no-treatment control group. Program-related teacher behaviors were observed and a pupil self-concept measure was administered before and after the inservice course. Results indicated that, although no changes occurred in program-related behaviors for the control group teachers, experimental group teachers showed significant increases on six of the 12 program-related behaviors. No gains in self-concept were made by handicapped children; however, there was some evidence for differential effectiveness of the program for learning disabled and emotionally handicapped children.

Affective Symptoms↗
PubMed1978

Perceptual and intellectual factors affecting number concept development in retarded and nonretarded children.

The role of MA and visual-perceptual ability in number concept development was examined with nonretarded and retarded children from regular school settings. Both groups were matched on MA and divided into high and low perceptual-ability levels. Using the Dodwell Number Concept Test, we tested each subject on various Piagetian tasks. Although retarded and nonretarded groups differed in IQ and CA, equivalence in MA resulted in equivalent number concept performance. For both groups, regardless of variation in IQ and CA, perceptual ability exerted a significant influence on number concept, with high perceptual ability resulting in superior number concept performance.

Child↗
PubMed1978

A study of object concept development in institutionalized and home-reared infants.

Institution- and home-reared infants were tested in five areas: language development, object concept development, play, social responsiveness, and social maturity. The sample consisted of 104 infants ranging in age from six months to two years, thus broadly encompassing object concept stages 3 to 6 described by Piaget. The relationship of each of the five functions to IQ and background was examined. This paper describes the specific nature of the object concept function as reflected by the investigation. It was found statistically that object concept scores, as measured by Piagetian tests, were relatively unaffected by the background variable but were significantly related to IQ. The other measures were sensitive to both IQ and background variables. The fact that the object concept score was relatively independent of the background variable suggested that it represents the most stable developing function and provides the most accurate reflection of the cognitive potential of the infant.

Child Development↗
PubMed1994

[Especially gifted: especially happy, especially satisfied? On the self-concept of highly gifted and average children].

This study investigates the relation between intelligence and self-concept. 287 fourth-grade elementary-school students (151 intellectually gifted children and 136 children of average intelligence) participating in the Marburg Giftedness Project responded to an extended version of the Piers-Harris Children's Self-Concept Scale. Results show that gifted children score higher in all facets of self-concept. However, this difference is only in the scale "intellectual and school status" statistically significant. Compared with gifted and non-gifted "achievers", gifted "underachievers" score lower in most self-concept facets. Independently of their intelligence level, children of this age group have developed a very positive self-concept.

Achievement↗
PubMed1994

[Concept development in theory development].

A concept development is the first part of the theory development. Concepts are linked together and form hierarchical, compositional, functional and heterogenous concept systems. In illustrating concept systems, diagrams, tables and figures are used. Concept systems are maps to help nurses, teachers and managers in examining the interests of nursing science in detail, to understand more profound way, and to produce still more new aspects for the interest.

Concept Formation↗
PubMed1997

Spectacles, contact lenses, and children's self-concepts: a longitudinal study.

The purpose of this study was to search for changes in children's self-concepts after the replacement of their spectacles with contact lenses. From a sample of 125 children 10- to 13-years-old who wore spectacles, 69 children were randomly designated to receive contact lenses. Over a 3-year span, self-concepts of the children who retained their spectacles and the children who switched to contact lenses were monitored for changes. Self-concept measures of the two groups did not change at significantly different rates, nor did rate of change vary with severity of myopia or how long glasses had been worn before the children entered the study, but boys' self-concepts changed more than girls' self-concepts. Theoretical and clinical implications of these results are discussed.

Adolescent↗
PubMed1998

Preliminary development of the Children's Physical Self-Concept Scale.

The development of a healthy eating style and physical fitness regimen in adolescence or adulthood might be contingent on physical self-concept in childhood. Most available measures of physical self-concept are inappropriate for use with 1st and 2nd grade children, so the present study developed, piloted, and partially validated the 27-item Children's Physical Self-Concept Scale (CPSS), which assesses Global physical self-concept and subscales of Physical Performance, Physical Appearance, and Weight Control behaviors in children 6 to 11 years of age. The test exhibits adequate test-retest reliability and internal consistency. A comparison of 316 normal and overweight children indicated that normal-weight children obtained higher Global physical self-concept scores and higher subscale scores. In addition, the CPSS distinguished test groups of diabetic, overweight, and normal-weight children in a contrasted-groups analysis.

Body Image↗
PubMed1976

Acquisition of concepts by TMR children as a function of type of modeling, rule verbalization, and observer gender.

A four-factor repeated measures design was established in order to determine (a) whether or not TMR children could acquire a novel rule-governed concept via modeling and (b) the effects of type of modeling demonstration, verbal rule provision, and observer gender on concept matching and transfer by TMR children. Twenty-four male and 24 female TMR children (mean IQ=44 and mean MA=5.67 years) were divided into four groups each equated by stratified assignment on IQ and MA. One male and one female group were randomly selected to observe a live female model present (a) massed-demonstration trials while verbalizing the concept, (b) massed trials without the concept being verbalized, (c) distributed-demonstration trials with the conceptual verbalization, and (d) distributed trials without conceptual verbalization. Subjects were then presented with three transfer tasks, each subsequently requiring a greater degree of generalization from the demonstration task. It was found that TMR children could acquire and transfer the complex concept via modeling. Distributed demonstrations yielded better initial response matching, while massed demonstrations led to better transfer. Rule provision facilitated transfer for massed-demonstration groups and facilitated matching for the male distributed-trials groups.

Adolescent↗
PubMed1989

'Brain death' and organ retrieval. A cross-sectional survey of knowledge and concepts among health professionals.

A sample of 195 physicians and nurses likely to be involved in organ procurement for transplantation was interviewed about knowledge, personal concepts, and attitudes concerning "brain death" and organ donation. Only 68 respondents (35%) correctly identified the legal and medical criteria for determining death. Personal concepts of death varied widely. Most respondents (58%) did not use a coherent concept of death consistently; others (19%) had a concept of death that was logically consistent with changing the whole-brain standard to classify anencephalics and patients in a persistent vegetative state as dead. The findings demonstrate confusion about correct criteria for determining death and differences in concepts of death that might prove troublesome to the transplantation enterprise. We conclude that health professionals should do more to resolve the clinical and conceptual issues in the definition and determination of death before policies concerning organ retrieval are changed.

Attitude of Health Personnel↗
PubMedDate not supplied

Informed consent and the redefining of conception: a decision ill-conceived?

The purposes of this study are to assess the use of the American College of Obstetricians and Gynecologists' (ACOG) definitions of conception (a synonym for implantation) and the beginning of pregnancy (at implantation) in the clinical practice of its members and to explore the implications of differing definitions of conception and pregnancy onset for the process of informed consent. A survey was mailed to 112 members of the Louisville Ob/Gyn Society asking what definition of conception they used in their clinical practice and when they judged pregnancy began. A second mailing was sent to nonresponding members. Using logistic regression analysis, the responses to these questions were evaluated with respect to practice type, number of years in practice, and the ACOG membership. Responses were received from 86% (96 of 112) of the members. A total of 73% (70 of 96) (95% CI 69-77%) of the members indicated that conception was a synonym for fertilization, and 24% (23 of 96) (95% CI 21-28%) indicated that conception was a synonym for implantation (P < .001). Of the members, 50% (48 of 96) indicated that pregnancy began at fertilization, and 48% (46 of 96) indicated that pregnancy began with implantation (NS). Regression analysis failed to demonstrate a significant relationship to type of practice, years in practice, or the ACOG membership for these responses. Neither ACOG definition has been consistently adopted by its members whose definitions are more consistent with lay and embryologist definitions. Potentially, the process of informed consent is jeopardized by these ambiguities. The ACOG is urged to reconsider its definitions.

Embryo Implantation↗
PubMed2003

Hormonal changes during the mating and conception seasons of wild northern muriquis (Brachyteles arachnoides hypoxanthus).

We investigated hormonal and behavioral changes in wild male and female northern muriquis (Brachyteles arachnoides hypoxanthus) at the Estação Biológica de Caratinga, Minas Gerais, Brazil, during a 6-mo period that encompassed the onset of the 1998-1999 mating and conception seasons. Individual females resumed mating with the resumption of ovarian cycling, which was not synchronized among them or related to their cortisol levels. Females experienced two to seven cycles prior to conceiving, and the first conception occurred 2 mo after the onset of the group's mating season. There were no differences in female cortisol levels across their premating, mating, and conception conditions. Cortisol levels were significantly higher in females than in males prior to the conception season, consistent with the prediction that energy reserves may be associated with breeding readiness in females, but not males, in this species. The sustained elevation in male cortisol occurred after the peak in their sexual activity, which resulted in the first conception of the year. Male cortisol levels were positively correlated between years that were similar in rainfall, but differed in the timing of sexual and reproductive events. The timing of cortisol elevations in males appears to be generally regulated by environmental cues, but is responsive to fine-tuning by social and behavioral cues related to the unpredictable timing of reproductive opportunities within their extended mating season.

Animals↗
PubMed2002

Transvaginal sonography in the detection of retained products of conception after first-trimester spontaneous abortion.

PURPOSE: The aim of this study was to assess the use of transvaginal sonography to detect retained products of conception after first-trimester spontaneous abortion. METHODS: All women who arrived at our hospital with spontaneous first-trimester abortions were included in this study and underwent transvaginal sonography. A sonographic diagnosis of "incomplete abortion" was based on a bilayer endometrial thickness of more than 8 mm. The final diagnosis of complete or incomplete abortion was based on the histopathologic findings at dilatation and curettage. The sensitivity and specificity of both clinical and sonographic examinations for detecting products of conception were assessed. RESULTS: A total of 113 women were recruited, and 14 were excluded for various reasons. Among 52 women with a clinically incomplete abortion, only 50% had retained products of conception. The use of transvaginal sonography resulted in a 29% (15/52) reduction of surgical intervention in these women. On the other hand, 30% (14/47) of women with a clinical diagnosis of complete abortion had retained products of conception. The sensitivity and specificity of cervical status for detecting retained products of conception were 65% and 56%, respectively, whereas the overall sensitivity and specificity of transvaginal sonographic examination (bilayer endometrial thickness 8 mm or less) were 100% and 80%, respectively. CONCLUSIONS: Transvaginal sonography is a useful supplement to clinical assessment in women who experience a spontaneous first-trimester abortion. If this modality is used to assess the uterine cavity, the cervical status can be ignored. Use of transvaginal sonography should reduce unnecessary general anesthesia and uterine curettage.

Abortion, Incomplete↗
PubMed2003

Homology in comparative, molecular, and evolutionary developmental biology: the radiation of a concept.

The present paper analyzes the use and understanding of the homology concept across different biological disciplines. It is argued that in its history, the homology concept underwent a sort of adaptive radiation. Once it migrated from comparative anatomy into new biological fields, the homology concept changed in accordance with the theoretical aims and interests of these disciplines. The paper gives a case study of the theoretical role that homology plays in comparative and evolutionary biology, in molecular biology, and in evolutionary developmental biology. It is shown that the concept or variant of homology preferred by a particular biological field is used to bring about items of biological knowledge that are characteristic for this field. A particular branch of biology uses its homology concept to pursue its specific theoretical goals.

Adaptation, Biological↗
PubMed1980

A critique of several conceptions of practice theory in nursing.

The thesis of this article is that the Dickoff, James, and Wiedenbach (1968a, 1968b) conception of a practice theory is roughly equivalent to a plan of action. This idea is contrasted with other conceptions of a prescriptive practice theory, especially the set-of-rules conception described by Jacox (1974). The set-of-rules conception is shown to be untenable, and other conceptions of practice theory are shown to be nothing more than examples of established forms of knowledge.

Ethics, Nursing↗
PubMed2004

Drug use among fathers around time of conception: two register based surveys from Denmark and The Netherlands.

STUDY OBJECTIVE: Despite the increasing attention for the role of paternal exposures around the period of conception, there is no factual information about drug utilisation of fathers. Therefore, the aim of this study was to describe the drugs dispensed to fathers around conception, using pharmacy dispensing data of community pharmacies in Denmark and The Netherlands. DESIGN AND SETTING: Using pharmacy dispensing data from the Pharmaco-epidemiological Prescription Database of North Jutland in Denmark and the InterAction database in The Netherlands, we examined the prescriptions reimbursed in the half year before conception of 56,735 Danish fathers from 1991 to 2000, and 5859 Dutch fathers from 1995 to 2000. MAIN RESULTS: One third of all fathers had taken up prescriptions for at least one drug in the half year before conception, both in Denmark and in The Netherlands. In the majority of fathers only one type of drug was dispensed, but in both countries at least 5% of all fathers had redeemed three or more types of drugs. The main drugs purchased by fathers in Denmark and The Netherlands were antibiotics (14.3 and 6.3% of all fathers, respectively), analgesics (6.1 and 7.6%), antihistamines (2.0 and 2.0%) and anti-ulcer drugs (1.6 and 2.5%). CONCLUSION: A large proportion of fathers used drugs around the time of conception. This finding emphasises the importance of safety information on therapeutic drugs with respect to potential paternal teratogenicity.

Abnormalities, Drug-Induced↗
PubMed1995

Oral contraceptive use after conception in relation to the risk of congenital urinary tract anomalies.

The authors conducted a case-control study of the relation of OC use after conception to the occurrence of congenital urinary tract anomalies (CUTAs). Singleton CUTA cases with no known chromosomal abnormality from seven counties in western Washington State born during the period January 1, 1990-December 31, 1991 were identified through the Washington State Birth Defect Registry. Controls without birth defects were randomly selected from singleton births that occurred in the same year as the cases in five large hospitals in King County. Mothers of the 118 cases and 369 controls were interviewed to obtain their contraceptive history as well as other information. Mothers of nine cases (7.6%) and eight controls (2.2%) had taken OCs at some time during the pregnancy. After adjustment for birth year and county of maternal residence, OC use after conception was associated with an almost five-fold increased risk of having a baby with a CUTA [odds ratio (OR) = 4.8, 95 percent confidence interval (CI), 1.6-14.1] relative to no contraception at or after conception. Use of other contraceptive methods after conception was not related to the risk of CUTAs. OC use during the 3 or 6 months prior to the conception also was not associated with the risk of CUTAs. Further adjustment for sociodemographic factors, reproductive history, perinatal exposure to exogenous agents, and past OC use did not change the results, nor did restricting the analysis to residents of King County.(ABSTRACT TRUNCATED AT 250 WORDS)

Abnormalities, Drug-Induced↗