Authors: Hiroshi Miura and Kayo Matsuo (三浦大志・松尾加代)

Title: The self-administered interview does not impair identification but
distorts its confidence

Journal(書誌情報）: Legal and Criminological Psychology

doi: 10.1111/lcrp.12311

論文URL:
https://bpspsychub.onlinelibrary.wiley.com/doi/pdf/10.1111/lcrp.12311

Abstract:
Purpose: The self-administered interview(c) (SAI(c)) is a tool
used to effectively collect eyewitness information. It has been shown that
conducting the SAI immediately after a witnessed event facilitates later
recall. However, effects of the SAI on subsequent identification remain
unclear. Therefore, we investigated whether the SAI affects subsequent
identification when a lineup is involved. Methods: After 164 undergraduate
participants watched a mock crime video, those in the SAI condition
described the recalled objects and aspects of the video using the SAI.
Meanwhile, in the control condition, participants did not describe the
recalled objects or aspects, but wrote about what they had learned in
regular psychology classes. Afterwards, the participants made
identifications and answered a few questions. Results: The results showed
that conducting the SAI did not alter the subsequent identification rates in
the lineup, but the metacognition for description-participants’ thoughts on
how the description task affected identification-was more positive in the
SAI condition than in the control condition. Moreover, when participants
made a false identification in the target-present lineup, their confidence
in the SAI condition was greater than that in the control condition.
Conclusions: The results suggest that the SAI can be used for witnesses with
the potential to make identifications later because it does not interrupt
identification itself. However, the confidence levels in identifications
made by eyewitnesses answering questions in the SAI should be carefully
assessed. This is because the SAI may distort the metacognition for
description and increase false confidence levels in the identifications made
by eyewitnesses.

著者Contact先の email: hiroshi9＠f7.dion.ne.jp (＠ を @に置き換えてくださ
い）

日本語によるコメント:
質問紙形式の目撃情報取得テクニックである、目撃者遂行型調査 (SAI) に関する研
究です。SAIが後の人物同定に及ぼす影響については、検討がなされておりませんで
した。そこで本研究では、実験参加者にSAIと人物同定を両方行ってもらい、同定の
正確性を統制群と比較しました。その結果、SAI群と統制群で同定の正答率に差はあ
りませんでしたが、SAI群の方がより事前の想起が同定に好影響をもたらすと考えて
いました。また、同定でフォイルを選択した場合の確信度はSAI群の方が高くなりま
した。SAIを行った目撃者は人物同定に関するメタ認知が不正確になる可能性がある
ため、確信度等の指標の評価は慎重に行う必要があると考えられます。

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