The GQM – can you see the pattern? Andy Griffiths Dr. Becky Milne University of Portsmouth United Kingdom
The use of questions Accurate information ‘lifeblood of investigation’ (Stewart, 1985) Negative effect of inappropriate questions established (Loftus &Palmer, 1974) Previous research has ‘scored’ types of questions only Appropriate question strategy is vital
Types of question OpenProbing Appropriate yes/no Inappropriate yes/no LeadingMultiple Forced choice Opinion /statement
GQM OpenProbingApp.ClosedInapp.ClosedLeadingMultiple Forced choice Opinion St. Time
GQM OpenProbingApp.ClosedInapp.ClosedLeadingMultiple Forced choice Opinion St. Time Each line allocated to question type e.g. ‘open’
GQM OpenProbingApp.ClosedInapp.ClosedLeadingMultiple Forced choice Opinion St. Time Top 3 lines are appropriate questions Bottom 5 lines are inappropriate questions
GQM OpenProbingApp.ClosedInapp.ClosedLeadingMultiple Forced choice Opinion St. Time As each question is asked it is plotted onto the correct line building the ‘question map’
GQM – ASSAULT (SUSPECT) OpenProbingApp.ClosedInapp.ClosedLeadingMultiple Forced choice Opinion Stmt Time
GQM – ASSAULT (SUSPECT) OpenProbingApp.ClosedInapp.ClosedLeadingMultiple Forced choice Opinion Stmt Time 121 questions = 45 minute interview, majority ‘probing’ (3>1)
GQM – ASSAULT (SUSPECT) OpenProbingApp.ClosedInapp.ClosedLeadingMultiple Forced choice Opinion Stmt Time Sequence - open, probe (3), app closed, probe, open, probe(3) etc
GQM – ASSAULT (SUSPECT) OpenProbingApp.ClosedInapp.ClosedLeadingMultiple Forced choice Opinion Stmt Time Majority productive but 27 ‘inappropriate closed’= training need
GQM – MURDER 1 (SUSPECT)TimeOpenProbingApp.ClosedInapp.ClosedLeadingMultiple Forced choice Opinion Stmt
GQM – MURDER 1 (SUSPECT)TimeOpenProbingApp.ClosedInapp.ClosedLeadingMultiple Forced choice Opinion Stmt Question ratio 2>1 (probing /open)
GQM – MURDER 1 (SUSPECT)TimeOpenProbingApp.ClosedInapp.ClosedLeadingMultiple Forced choice Opinion Stmt No inappropriate questions
GQM – MURDER 1 (SUSPECT)TimeOpenProbingApp.ClosedInapp.ClosedLeadingMultiple Forced choice Opinion Stmt Sequence - open, probing, app closed, probing(3), open, probing(3), open etc
GQM – MURDER 2TimeOpenProbingApp.ClosedInapp.ClosedLeadingMultiple Forced choice Opinion Stmt Topic – open, probe, app closed, probe, app closed, probe(6), app closed, probe(3) etc
GQM – MURDER 2TimeOpenProbingApp.ClosedInapp.ClosedLeadingMultiple Forced choice Opinion Stmt Topic question ratio 13>1 (probing/open)
GQM – CHILD ABUSE SUSPECT OpenProbingApp.ClosedInapp.ClosedLeadingMultiple Forced choice Opinion Stmt
GQM – CHILD ABUSE SUSPECT OpenProbingApp.ClosedInapp.ClosedLeadingMultiple Forced choice Opinion Stmt Question ratio - 3>1 probing/open but 3>1 leading/open and 71/121 inappropriate
GQM – CHILD ABUSE SUSPECT OpenProbingApp.ClosedInapp.ClosedLeadingMultiple Forced choice Opinion Stmt Random pattern
GQM – CHILD ABUSE SUSPECT OpenProbingApp.ClosedInapp.ClosedLeadingMultiple Forced choice Opinion Stmt Accuses suspect
GQM – CHILD ABUSE SUSPECT OpenProbingApp.ClosedInapp.ClosedLeadingMultiple Forced choice Opinion Stmt ‘I’ve interviewed this girl and she’s telling the truth’
GQM – CHILD ABUSE SUSPECT OpenProbingApp.ClosedInapp.ClosedLeadingMultiple Forced choice Opinion Stmt /11 open questions after accusing the suspect
Conclusions Scoring of question type frequency is a very basic method of evaluation
Conclusions Context of questions is more informative than an isolated definition of one question
Conclusions Scoring of question type frequency is a very basic method of evaluation Context of questions is more informative than an isolated definition of one question Context of questions is more relevant than the number of any one question type
Conclusions Scoring of question type frequency is a very basic method of evaluation Context of questions is more informative than an isolated definition of one question Context of questions is more relevant than the number of any one question type The GQM identifies patterns of questions associated with both productive and unproductive interviews The GQM identifies patterns of questions associated with both productive and unproductive interviews
The GQM – can you see the pattern? Contact details -