TY - JOUR
T1 - Human Lie-Detection Performance
T2 - Does Random Assignment versus Self-Selection of Liars and Truth-Tellers Matter?
AU - Ask, Karl
AU - Calderon, Sofia
AU - Mac Giolla, Erik
N1 - Publisher Copyright:
© 2019 The Authors
PY - 2020/3
Y1 - 2020/3
N2 - Deception research has been criticized for its common practice of randomly allocating senders to truth-telling and lying conditions. In this study, we directly compared receivers’ lie-detection accuracy when judging randomly assigned versus self-selected truth-tellers and liars. In a trust-game setting, senders were instructed to lie or tell the truth (random assignment; n = 16) or were allowed to choose to lie or tell the truth of their own accord (self-selection; n = 16). In a sample of receivers (N = 200), we tested two alternative hypotheses, predicting opposite effects of random assignment (vs. self-selection) on receivers’ lie-detection accuracy. Accuracy rates did not differ significantly as a function of veracity assignment, failing to support the claim that random assignment of liars and truth-tellers alters the detectability of deception. Equivalence tests indicated that, while a small effect of random assignment cannot be ruled out, moderate (or larger) effect sizes are unlikely.
AB - Deception research has been criticized for its common practice of randomly allocating senders to truth-telling and lying conditions. In this study, we directly compared receivers’ lie-detection accuracy when judging randomly assigned versus self-selected truth-tellers and liars. In a trust-game setting, senders were instructed to lie or tell the truth (random assignment; n = 16) or were allowed to choose to lie or tell the truth of their own accord (self-selection; n = 16). In a sample of receivers (N = 200), we tested two alternative hypotheses, predicting opposite effects of random assignment (vs. self-selection) on receivers’ lie-detection accuracy. Accuracy rates did not differ significantly as a function of veracity assignment, failing to support the claim that random assignment of liars and truth-tellers alters the detectability of deception. Equivalence tests indicated that, while a small effect of random assignment cannot be ruled out, moderate (or larger) effect sizes are unlikely.
KW - Deception
KW - Detection strategy
KW - Lie detection
KW - Random assignment
KW - Self-selection
UR - https://www.scopus.com/pages/publications/85076966148
U2 - 10.1016/j.jarmac.2019.10.002
DO - 10.1016/j.jarmac.2019.10.002
M3 - Article
AN - SCOPUS:85076966148
SN - 2211-3681
VL - 9
SP - 128
EP - 136
JO - Journal of Applied Research in Memory and Cognition
JF - Journal of Applied Research in Memory and Cognition
IS - 1
ER -