Adolescent egocentrism: Exploration into possible contributions of parent-child relations

A family relations model for the study of adolescent egocentrism was tested in an exploratory study of the relationship between parental socialization styles and adolescents' imaginary audience behavior. A sample of adolescent boys (n=58) and girls (n=57) responded to Heilbrun's Parent-Child Interaction Rating Scale and Schaefer's Parent-Behavior Inventory and completed Elkind and Bowen's Imaginary Audience Scale. As hypothesized, rejection-control was associated with increased imaginary audience behavior, while physical affect was negatively related to self-consciousness. Sex differences were noted, with rejection-control being most important in predicting self-consciousness for boys and physical affect being the best predictor of girls' egocentrism behavior. The data provide an alternative model to a cognitive developmental perspective of adolescent egocentrism development.Research was partially supported through the Western Regional Research Project W-144, Development of Social Competency in Children, with funding in part from the Science and Education Administration/Cooperative Research of USDA, and the Utah State University Agricultural Experiment Station.Received his M.A. in psychology from the University of Nebraska at Omaha and Ph.D. in human development from the Pennsylvania State University. Current research interest is personality and social development of children and adolescents.Completed his M.S. Degree in family and human development at Utah State University. Current research interests include the study of interpersonal perception and attraction and human socialization.     

Adolescent life changes and illness: A comparison of three models

This article examines how stressful life-events relate to the occurrence of illness in a nonclinical random sample of adolescents and what processes intervene in this relationship. Three alternative models of the life events and illness relationship are compared. Data support a “direct stress and illness model” as opposed to either a “sick role behavior model” or a “mental health model.” Social support from parents appears to mediate the life events-illness relationship. Undesirable and ambiguous life events have more impact on illness than desirable events do. Results are discussed in terms of adolescence as a unique developmental stage.     

Adolescent egocentrism: The association among imaginary audience behavior,cognitive development,and parental support and rejection

Two theoretical perspectives have been advanced to account for heightened egocentrism during early adolescence. One perspective assumes that formal operational thought is associated with increased self-consciousness. The second perspective proposes that parental support and affection diminish egocentrism, while parental rejection enhances self-conscious reactions by young adolescents. Data analysis using responses from 251 early adolescents (131 males, 120 females) on measures of cognitive development and perceived parental support revealed that (a) formal operations diminished adolescent egocentrism, while (b) perceived parental relations were predictive of self-consciousness. Contrary to posttheoretical assumptions, seventh graders functioning at the level of concrete operations were higher in self-conscious egocentrism than were formal-operations youths. Further, perceived parental support was associated with diminished egocentrism, while perceived parental rejection was predictive of heightened self-consciousness.Her research interests focus on early adolescent development.His research interests focus on personality and social development during adolescence.His research interests focus on clinical and counseling psychology and psychotherapy.     

Simultaneous analysis of d-3-methoxy-17-methylmorphinan and l-3-methoxy-17-methylmorphinan by high pressure liquid chromatography equipped with PDA

d-3-Methoxy-17-methylmorphinan (Dextromethorphan, DXM), which is a structural analog of morphine and codeine, has been widely used as a non-narcotic antitussive agent. It is a safe drug in therapeutic dose and does not produce analgesic effects, while its enantiomer, l-3-methoxy-17-methylmorphinan called levomethorphan (LXM) is a potent narcotic analgesic. DXM has been widely abused in Korea due to its hallucinogenic effect in large doses; therefore, the health authorities have regulated its use as a psychotropic agent since 2003. As its abuse has been serious, a possibility that DXM would be smuggled into Korea has also increased. Moreover, it has been suspected that there was the possibility of the adulteration or substitution of DXM with LXM due to their chemical similarities. Therefore, it was necessary for us to establish the enantiomeric separation of DXM and LXM. In this study, a liquid chromatographic method using a chiral column capable of separating stereoisomers of DXM as well as analyzing the major metabolites of DXM, 3-methoxymorphinan, 3-hydroxymorphinan, and 17-hydroxymethylmorphinan was developed. The validation of a method was studied through repeatability of retention times. Using this method, 32 confiscated DXM samples were analyzed to identify the enantiomers of DXM. As a result, DXM was detected in all samples and there was no evidence of the adulteration or substitution of DXM with LXM. Nevertheless, the stereochemical analysis of DXM and LXM is important not only to identify starting materials for illegal drug manufacture but also to understand the trends of abused drugs.     

Hyaluronidase as a liquefying agent for chemical analysis of vitreous fluid

Vitreous humor is a suitable specimen for postmortem clinical chemistry because the analytes remain relatively stable after death and they closely reflect blood levels immediately prior to death. The viscous nature of vitreous fluid, however, presents analytical problems including imprecision and inaccuracy. Various preanalytical treatments, such as boiling, high speed centrifugation, microfiltration and dilution have been used. These techniques are labor intensive and add to imprecision and inaccuracy. Because glycosaminoglycans contribute significantly to the viscosity of vitreous humor, we used hyaluronidase as a liquefying agent. We compared the results of analyses in 33 vitreous humor specimens after hyaluronidase treatment with the results after either no treatment or specimen dilution. Seventeen of the 33 specimens could not be analyzed without dilution. Even after dilution, several analytes still could not be measured. Hyaluronidase treatment negated the need for sample dilution and had no significant effect on the analyses.