Does Advance Interview training work

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Is all training good training ?

• Andy Griffiths
• Dr.Becky Milne
• University of Portsmouth

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Five tier stratgey

• Tier 1 new officers/ investigators
• Tier 2 volume crime
• Tier 3 specialist interviewer
• Tier 4 supervision/monitoring
• Tier 5 interview adviser

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Five tier stratgey

• Tier 1 new officers/ investigators
• Tier 2 volume crime
• Tier 3 specialist interviewer
• Tier 4 supervision/monitoring
• Tier 5 interview adviser

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Overall Research Aim

• 50 advanced trained officers selected
• 4 suspect interviews from each officer
• 50 witness interviews by same officers
• 1 ECI from each officer
• Analysis of results/comparison

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Suspect Witness

• Poor standard prior to training
• Improvement after training
• Simple criteria
• Complex criteria

• Pre-training standard unknown
• Task focused interviews
• Probing question style
• Low witness compatibility

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Hypothesis

• The training programme design ( 3 weeks
  suspect plus 3 days ECI) contributed to an
  overshadowing effect. Investigators who had
  undergone this training were more likely to
  utilise a conversation management approach
  regardless of the situation

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Further Research

• Study alternative training programme
• Design common rating scale
• Evaluate interviews by both groups
• Compare results

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Suspect/ECI Witness

• PEACE course
• 3 week suspect
• Final assessment
• 6 months experience
• 3 day ECI

• PEACE course
• 3 week witness incl. ABE/ECI
• 2 assessments

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Comparisons
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Comparisons
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Comparisons
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Comparisons
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Comparisons
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Comparisons
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Comparisons
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Further Comparisons
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Further Comparisons
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Further Comparisons
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Further Comparisons
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Further Comparisons
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The use of Questions
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The use of questions

• Accurate information lifeblood of investigation
  (Stewart, 1985)
• Negative effect of inappropriate questions
  established (Loftus Palmer, 1974)
• Appropriate question strategy is vital

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Asking the right questions Mortimer,A. Policing
Vol 102 1994
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GQM
Time

As each question is asked it is plotted onto the
correct line building the question map
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GQM MURDER 1 (SUSPECT)
8 17 23 2
6 12
15 21
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GQM MURDER 1 (SUSPECT)
8 17 23 2
6 12
15 21
Question ratio 2gt1 (probing /open)
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GQM RAPE, VICTIM
6 21 26 33
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11 16
19 21
Time
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GQM RAPE, VICTIM
6 21 26 33
6
11 16
19 21
Time
Probing questions 21 open questions
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GQM RAPE, VICTIM
6 21 26 33
6
11 16
19 21
Time
Free recall followed by 6 probing questions
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GQM RAPE, VICTIM
6 21 26 33
6
11 16
19 21
Time
Majority of interview probing and closed
questions ! No use of ECI instructions after 21
minutes
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GQM SEXUAL ASSAULT
6 12 17 18 20 22 24
29 31 33 37 41 46 1 4
12 13 16 19
Time
?
?
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GQM SEXUAL ASSAULT
6 12 17 18 20 22 24
29 31 33 37 41 46 1 4
12 13 16 19
Time
?
?
Open questions gt probing questions
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GQM SEXUAL ASSAULT
6 12 17 18 20 22 24
29 31 33 37 41 46 1 4
12 13 16 19
Time
?
?
Greater use of ECI instructions, very little
probing
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Conclusions

• Hypothesis partially supported
• Questioning style differs between groups
• Suspect/ECI group work harder
• More use of ECI by Witness group
• Quantity v Quality ?
• Further work needed

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Is all training good training ?

• andrew.griffiths_at_sussex.pnn.police.uk
• andytgriff_at_btinternet.com