to the ‘reason for disbelief’ cross-examination question and its
follow-up were scored. For any given response, the valence of the
score (positive or negative) reflected accuracy. Accurate responses
(agreement with a correct suggestion or disagreement with an
incorrect suggestion) were assigned a positive score. Inaccurate
responses (agreement with an incorrect suggestion or disagreement
with a correct suggestion) were assigned a negative score. The
numerical value of the score (0, 1, or 2) reflected the certainty with
which the response was given. Responses were assigned a score of
2 or −2 (depending on accuracy) if they indicated complete agreement
or disagreement with the interviewer’s suggestion, a score of
1 or −1 if they indicated tentative agreement or disagreement (e.g.,
‘I think so’), or a score of 0 for a noncommittal response (e.g., ‘don’t
know,’ ‘maybe’). Two coders independently scored 36 transcripts
(28%) and achieved 85% agreement (kappa = .79). Disagreements
were resolved through discussion; one coder scored the remaining
transcripts.