Lineups

Lineups

1. Estimator variable

   • present at scene
     • can't be controlled
       • stress, distance

2. System variable

   • procedural
     • can be controlled
       • sim/seq line up

3. Suspect bias

   • where in the line up - stand out?
     • General impairment
       • own-race bias

4. Line ups in research

   • important for real life
     • system variables and refining procedures
       • PACE
         • suspect selects place, 8 people at least

5. Sim and Seq line ups

   • meta-analysis found seq better
   • data splitting found depends
     • seq = better if target absent
     • sim = better if target present
     • methodological influence

6. Decision making

   • non-bias instructions
     • rely on memory only
   • still indiv diffs
     • sim = relative
       • seq = absolute
       • line up context influences judgement even when target absent

7. Video advantage

   • less costly, more efficient
     • less bias effects
       • age and race

8. Stress

   • Yerkes-Dodson
     • criticised - good measure of stress?
       • 3D model w/cog component
         • cog anxiety, physio reaction - causal effect increase on mem until optimal point exceeded
           • target present - more neg stress
             • stronger for eco than lab

9. Eco studies

   • London dungeon
     • stress reduced accuracy
       • millitary diff results
         • high stress improved memory
           • more research needed
             • MDM?