Optimierung der Qualität von Holland-basierten Berufsfotos: Der Foto-Interessentest FIT Serie 2003 (English shop)

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The Photo-Based Interest Test FIT Series 2003 by Toggweiler and Stoll (2002) is a nonverbal instrument for measuring vocational interests.
This instrument is updated regularly and provided with new norms. Meanwhile, the latest version is already available with the Photo-Based Interest Test F-I-T Series 2006 (Stoll, Jungo & Toggweiler, 2006).
The instrument is based on the internationally known and widely used interest typology of Holland (1997) and the occupational fields of Egloff (2005).
The 2003 series consists of 127 occupational photographs by Gubler/Gerosa.
Producing occupational photographs in such a way that they function in the desired manner (i.e. in accordance with the theory) is not entirely straightforward. The question therefore arises as to whether it is possible to describe the occupational photographs contained in the Photo-Based Interest Test FIT Series 2003 in such a way that aspects of their psychometric quality can thereby be captured and predicted.
Is it possible to derive useful categories for describing occupational photographs?
Can the results be drawn upon in order to make precise and reliable statements for the future design of occupational photographs? How precise are such predictions? In order to answer these questions, an analytical framework for assessing occupational photographs was developed, based on the content-analytical approach of Mayring (2002, 2003). Using this analytical framework, the 127 occupational photographs were assessed by a total of 80 raters, with judgements from five raters available for each photograph. This made it possible subsequently to extract nine assessment dimensions for describing occupational photographs and to account for two important parameters of the occupational photographs (popularity and discriminatory power) by means of multiple linear regressions.
The proportions of variance explained are considerable. They confirm the importance of the extracted assessment dimensions and design aspects.
Against the background of the results obtained, the popularity and discriminatory power of occupational photographs can be predicted relatively accurately, and can be purposefully designed and optimised.