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Why do people fail to see simple solutions? Using think-aloud protocols to uncover the mechanism behind the Einstellung (mental set) effect
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Category: Project
Description: Student research project at the FernUniversität in Hagen, summer term 2017
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Components
Research question on an exploratory base
We would like to investigate whether thinking aloud or thinking silently affects Einstellung (set) effects in a systematic manner. Since the research ...
Method: general overview
Uses a variation of the Luchins water jug paradigm. Computer-based study in a non-laboratory, but standardized private setting. Participating student ...
Method: experimental design (independent variables)
3 x 2 between subjects design. (a) Independent variable “Einstellung” with the experimental conditions “Einstellung with critical trials”, “Einstellun...
Method: dependent variables
a) Time required until solution, b) solution success for the extinction trial: binary variable coding whether the solution has been found (1) or not f...
Main analyses
3 x 2 ANOVA, between subjects, following the design matrix, for solution time. Main effects for the factor “Einstellung” test the hypothesis of Einste...
Additional analyses
Among others: Test whether thinking aloud participants take more time than subjects of the silent control group (included in the 3 x 2 ANOVA from the ...
Sample
160 to 190 subjects. The number is in part affected by external circumstances and practical limitations. Planned sampling method: 30 students from two...
Exclusion criteria
Subjects will be excluded from the analysis: when the withdraw their informed consent, when they quit during the test, when they repeatedly ask the ex...
Original test material
PDF versions created from power point slides presenting the water jug tasks
Original Data
This folder contains the (untranslated, German) think aloud protocols, the detailed coding of the think aloud data in Excel spreadsheets, and summary ...
Acknowledgements
Special thanks to the student project courses ‘Empirisch-experimentelles Praktikum’ of the summer term 2017 held at the FernUniversität in Hagen: B. B...
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