engleski

Pictures as elicitation materials: their relevance and challenges during the process of test development

Picture stimuli are often used in studies on memory, perception, and language, as well as in the tests designed primarily to asses these same functions (Ghasisin et al., 2015). For such stimuli to be valid, normative data confirming their representativeness and usability need to be gathered (Cycowicz et al., 1997). This process is by no means simple, yet is crucial ; both from the standpoint of test quality (and subsequently the quality of the gathered data), and from the standpoint of the quality of research. During this talk, several methodological challenges regarding the development and usage of picture stimuli will be discussed, mostly with respect to the process of adaptation of the CAT into the Croatian language. These include the importance of taking into account several different, yet intertwined factors: 1) Population of people for whom the stimuli are designed, i.e. heterogeneity of the sample (differences in age, region of origin, level of education, income, as well as the differences in lifestyle, cultural and religious beliefs, and the existence of comorbid conditions – visual neglect, hemiparesis, etc.) ; 2) The quality, style and content of picture stimulus and its relevance for the task (the question of outdated vs too modern, the question of distractors, as well as the question of the required amount of information on the picture, i.e. how much information is just enough to evoke the desired response) ; 3) Psycholinguistic features of the word the picture is supposed to evoke (the challenges regarding the visual presentation of words of low imageability, i.e., abstract words) ; 4) The representativeness of the picture (does it represent only and exclusively the desired word for most of the people). Examples of these challenges will be presented, as well as the way they have been addressed.

Test development ; Picture stimuli ; Methodological challenges ; Psycholinguistic features

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