Kobs, Franziska (2023) Steps towards a more naturalistic picture of change blindness – The Influence of Context on Change Detection. Master thesis, Psychology.
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Abstract
How we perceive distinct characteristics as multiple objects in the visual field is not completely clear. The influence of context on visual-feature and variable binding affecting change detection is investigated using the conceptual network model by de Vries (2004). This paper expected that context helps change detection through the implicit memory effect of context, an often-neglected factor guiding attention. Two change detection tasks examined the effect of context. The in-context condition is expected to support change detection. In the first experiment, in-context is defined as the target item being in its natural position, e.g., changes to a rabbit positioned on the floor would be easier to detect compared to when placed in top location. In the second experiment, in-context, defined as the identity cue and target having the same relative angle to the observer, supposedly supports change detection compared to out-of-context, when cue and target are depicted from different perspectives. The samples consisted of fifty-three (E1) and forty-nine (E2) participants. Dependent variables were change sensitivity d’ (Signal Detection Theory) and location accuracy. Independent variables are the manipulation of context (in-context, out-of-context) and the occurrence of change (change, no change). For the first experiment, a repeated-measures ANOVA found no statistically significant influence of in-context positioning on change detection. For the second experiment, a repeated-measures ANOVA found a statistically significant benefit for in-context trials supporting location accuracy during change detection. This study shows that context influences change blindness. Future studies could examine the impact of other operationalisations of context on change blindness.
| Item Type: | Thesis (Master) |
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| Supervisor name: | Vries, P.H. de |
| Degree programme: | Psychology |
| Differentiation route: | Cognitive Psychology and Psychophysiology (CPP) [Master Psychology] |
| Date Deposited: | 12 Jan 2023 15:36 |
| Last Modified: | 12 Jan 2023 15:36 |
| URI: | http://gmwpublic.studenttheses.ub.rug.nl/id/eprint/1520 |
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