1. School of Applied Psychology Mt Gravatt, Australia The Effective Sex Crime Interviewer Mark Kebbell, Nina Westera & Francesca Brown

2. Sex crime investigators: What would make me more effective? Managers: Who should I recruit? How should I manage them? Trainers: What are the training needs for effective sex crime investigators? Who should be trained? Department name (edit in View > Header and Footer...)

4.  37 child/ adult sex crime investigators (Males = 26, Females = 11)  Mean Age = 41.8 years  Length of police service (7 - 34 years) = 18.2 years  Time as sex crime investigator (3-27years) = 11.7years Participants School of Applied Psychology, Mt Gravatt, Australia

5. Repertory Grid Technique Kelly, 1955 Comparison of similarities & differences = list of constructs clustered into meaningful groups Identifying characteristics Specific details are sensitive Unobservable behaviours (e.g. decision- making) Understanding perceptions without anticipating terms of reference Sophisticated & complex with a greater demand for time

6. School of Applied Psychology, Mt Gravatt, Australia Interview Structure Nominate 4 sex crime investigators: 2 effective (A & B), 2 less effective (C & D) 1. 2. A B C D For example: X X X X X X

7. SUCCESSFUL INVESTIGATIONS The complainant The suspect The crime The investigation

8. THE INVESTIGATOR Individual factors Knowledge, experience and decision-making Organisational factors

9. School of Applied Psychology, Mt Gravatt, Australia What does this mean? System v Estimator factors (Wells, 1979). Sex crime investigators: How can I be more effective? Managers: Who should I recruit? How should I manage them? Trainers: What are the training needs for effective sex crime investigators? Who should be trained?