Title Page
ABSTRACT
국문 초록
Contents
GENERAL INTRODUCTION 15
EXPERIMENT 1 23
2.1. Introduction 23
2.2. Methods 24
2.2.1. Participants 24
2.2.2. Stimuli 24
2.2.3. Procedure 26
2.3. Results 27
2.3.1. Stimulus Presentation Durations 27
2.3.2. Stimulus Features 29
2.3.3. Complexity Judgments for a Stimulus Relative to its Paired Stimulus 32
2.3.4. Tendency over the blocks 34
2.4. Discussion 36
EXPERIMENT 2 39
3.1. Introduction 39
3.2. Methods 41
3.2.1. Participants 41
3.2.2. Stimuli 41
3.2.3. Procedure 43
3.3. Results 44
3.3.1. Stimulus Presentation Durations 44
3.3.2. Stimulus Features 46
3.3.3. Complexity Judgments for a Stimulus Relative to its Paired Stimulus 49
3.3.3. Tendency over the blocks 50
3.3.4. Rating scores 52
3.4. Discussion 53
GENERAL DISCUSSION 55
REFERENCES 62
APPENDIX 69
Table A1. Experiment 1 results of 3 x 2 x 2 x 2 rmANOVA as factors of presentation duration, quantity, spatial proximity and order, including main effects and interaction effects. 69
Table A2. Post hoc comparisons with Bonferroni correction in Experiment 1. Comparisons were made between all possible combinations of the subfactors of quantity (small/large),... 70
Table A3. Experiment 1 results of 3 x 3 x 2 x 2 rmANOVA as factors of presentation duration, quantity, spatial proximity and order, including main effects and interaction effects. 71
Table A4. Post hoc comparisons with Bonferroni correction in Experiment 2. Comparisons were made between all possible combinations of the subfactors of quantity... 72
Figure 1. Examples of stimuli for all conditions in Experiment 1. The top row shows examples of small stimuli, while the bottom row shows examples of large... 26
Figure 2. Schematic diagram of a sample trial in Experiment 1. At the beginning of each trial, a fixation dot was presented at the center of the screen. The... 27
Figure 3. Subjective complexity judgement according to presentation durations. The x-axis indicates stimuli, and the y-axis indicates the proportion of being selected as more... 28
Figure 4. Differences in subjective complexity judgments between stimulus features. (a) Main effect of features. The results of quantity, spatial proximity, and order are horizontally... 31
Figure 5. Reaction times (RTs) for all stimulus conditions in Experiment 1. (a) RT differences across stimuli. The x-axis indicates stimulus conditions, and the y-axis... 32
Figure 6. Pairwise comparisons showing the proportion of selected as more complex and the statistical significance based on a one-sample t-test differences it from chance level.... 33
Figure 7. Subjective complexity judgement of stimuli by blocks. Each subplot indicates the results from each stimulus condition. The x-axis of each subplot... 34
Figure 8. RTs according to the presentation durations and blocks. The x-axis represents the order of the blocks, while the y-axis displays the duration of the... 35
Figure 9. Examples of stimuli for all conditions in Experiment 2. The top row shows examples of small stimuli, the middle row shows examples of medium... 42
Figure 10. Schematic diagram of a sample trial in Experiment 2. (a) Part 1 with the identical procedure of Experiment 1.... 44
Figure 11. Subjective complexity judgements according to presentation durations. The x-axis indicates stimulus conditions, and the y-axis indicates the proportion of being... 45
Figure 12. Differences in subjective complexity judgments between stimulus features. (a) Main effect of features. The results of quantity, spatial proximity, and order are horizontally... 47
Figure 13. RTs for all stimulus conditions in Experiment 1. (a) RT differences across stimuli. The x-axis indicates stimulus conditions, and the y-axis... 48
Figure 14. Pairwise comparisons showing the proportion of selected as more complex and the statistical significance based on a one-sample t-test differences it from chance level.... 49
Figure 15. Subjective complexity judgement of stimuli by blocks. Each subplot indicates the results from each stimulus condition. The x-axis of each subplot... 50
Figure 16. RTs according to the presentation durations and blocks. The x-axis represents the order of the blocks, while the y-axis displays the duration of the... 51
Figure 17. Correlation between proportions of the 2AFC task and complexity score of the rating task.... 52
Figure 18. Correlation between proportions of the 2AFC task and preference scores of the rating task.... 53