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The Ecological Q-Sort was developed specifically for the measurement of self-concept in older adults. Self-concept is defined as individuals' perceptions of themselves in relationship to their environment. Consequently, self-concept is contextual, multidimensional and varies with the situation. The Ecological Q-Sort was subjected to convergent and discriminant validational procedures in the present study. Correlational analyses provided support for both convergent and discriminant validity, suggesting that this instrument measures ecological, domain specific self-concept in older persons. However, multivariate analysis of variance did not yield significant main effects or interactions for sex, marital status, and health as observed on the sets of ecological and non-ecological self-concept measures.

Thesis (Ph. D.)--University of California, San Diego and San Diego State University, 2006. / Vita. Includes bibliographical references (leaves 90-96).

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Die onlangse sosio-politieke omstandighede in Suid-Afrika het marksegmentering vereenvoudig tot die verdeling van die mark in 'n wit mark aan die een kant wat gekenmerk is deur ekonomiese welvarendheid, en 'n swart mark aan die ander kant wat beskou is as 'n mark vir basiese, goedkoop produkte. Huidige veranderinge in die sarnelewing breek die kunsn.•..·:ge grense tussen wit en swart verbruikers af, en dwing bemarkers om ondersoek in te stel na die rnoontlikheid van rnulti-etniese verbruikersmarksegmentering. In die Jig hiervan is 'n ondersoekende studie gedoen wat poog om ooreenstemende veranderlikes te identifiseer wat ebruik kan word om 'n gekose, multi-etniese verbruikersmark, te beskryf. Die self-konsep, en die hulpbronne wat die self-konsep . onderhou, is die kern van hierdie ondersoek. Die self-konsep word verteenwoordig · deur die belewenis van eienskappe soos intelligensie, leierseienskappe, aanvaarding van en deur ander, vermoe om vriende te maak, aanvaarding van jou andersheid en vertroue in jou eie vermoens. Hulpbronne sluit opleiding, inkomste, gesondheid, selfvertroue, gretigheid om te koop, intelligensie en energievlak in. Gestruktureerde vraelyste is uitgestuur na die ouers van Yellawwoods School, 'n veelrassige verbruikersmark. Gemeenskaplikhede ten opsigte van die self-konsep is getoets en daar is bevind dat daar genoegsame ooreenkomste bestaan om 'n enkele verbruikersprofiel van die mark op te stel. / The recent socio-political climate in South Africa simplified market segmentation by forcing the market into two extremes. On the one hand there was a prosperous white market and on the other hand a black market at which basic, low cost products, were aimed. Current changes in society eliminate the artificial boundaries between black and white consumers and marketers are forced to look into the possibility of multi-ethnic market segmentation. Therefore, exploratory research was done to identify common variables, which can be used to describe a selected multi-ethnic market segment. The elf-concept of the consumer, and the resources that sustain it, is the focus of this study. Structured questionnaires were send to the parents of Yellaunvoods School, a multi­ ethnic market. Similarities related to the self concept were investigated and sufficient evidence was found to support the notion that one profile can be use to describe this market. / Communication Science / M.A. (Kommunikasiekunde)