Title Page
Contents
ABSTRACT 11
Ⅰ. Introduction 13
Ⅱ. Literature Review 17
1. Nonspecific Motive Crime 17
1) Definition and Characteristics of Nonspecific Motive Crime 17
2) Nonspecific Motive Crime and Mental Illness in South Korea 19
2. Mental Illness 20
1) Definitions of Mental Illness 21
2) Statistics of Mental Illnesses 22
3) Perceptions of Mental Illnesses 24
3. Factors Influencing Legal Decisions 26
1) The Effect of Pretrial Publicity on Legal Decisions 26
2) The Effect of the Defendant's Mental Illness on Legal Decisions 28
4. Research Hypotheses 32
Ⅲ. Methods 35
1. Participants 35
2. Study Design and Procedure 35
3. Materials 36
1) Online News Article 36
2) Trial Vignette 37
4. Measures 38
1) Manipulation Check 38
2) Dependent Variables 39
5. Data Analyses 40
Ⅳ. Results 41
1. Preliminary Analyses 41
1) Descriptive Analyses 41
2) Correlations 41
2. Main Analyses 45
1) Interaction Effect of Pretrial Publicity and the Defendant's Mental Illness on Legal Decisions 45
2) Main Effect of Pretrial Publicity and the Defendant's Mental Illness on Legal Decisions 46
Ⅴ. Discussion 49
1. Summary of Results 49
2. Implications 53
3. Limitations and Future Directions 54
References 56
APPENDICES 10
〈Appendix 1〉 Study Instructions and Consent Form 63
〈Appendix 2〉 Online News Stimuli and Manipulation Check 65
〈Appendix 3〉 Vignettes and Manipulation Check 67
〈Appendix 4〉 Dependent Variables 70
〈Appendix 5〉 Demographic Variables and Screening Questions 71
〈Appendix 6〉 Debriefing 72
ABSTRACT IN KOREAN 73
〈Table 1〉 Characteristics of nonspecific motive crime offenders 20
〈Table 2〉 The number of people treated for mental illnesses 23
〈Table 3〉 Descriptive statistics of the participants' demographics 42
〈Table 4〉 Descriptive statistics of legal decisions 43
〈Table 5〉 Correlations between variables 44
〈Table 6〉 Results of two-way MANOVA on legal decisions 48
〈Figure 1〉 Associated terms analysis of nonspecific motive crime 14
〈Figure 2〉 The interaction effect of pretrial publicity and the defendant's mental illness on sentence length 46