scholarly journals What are you hiding? Initial validation of the reaction time‐based searching concealed information test

2020 ◽  
Vol 34 (6) ◽  
pp. 1406-1418
Author(s):  
Dave Koller ◽  
Franziska Hofer ◽  
Tuule Grolig ◽  
Signe Ghelfi ◽  
Bruno Verschuere
Keyword(s):  
Reaction Time ◽  
Concealed Information Test ◽  
Initial Validation ◽  
Concealed Information ◽  
Information Test

scholarly journals PREPRINT: What are you hiding? Initial validation of the reaction time-based searching Concealed Information Test

2020 ◽  
Author(s):  
Dave Koller ◽  
Franziska Hofer ◽  
Tuule Grolig ◽  
Signe Maria Ghelfi ◽  
Bruno Verschuere
Keyword(s):  
Reaction Time ◽  
Sampling Error ◽  
Classification Performance ◽  
Archival Data ◽  
Concealed Information Test ◽  
Data Set ◽  
Initial Validation ◽  
New Knowledge ◽  
Concealed Information ◽  
Information Test

The reaction time-based Concealed Information Test (RT-CIT) has been used to judge the veracity of an examinees claim to be naïve about an incident by testing his/her memory of relevant details. Here, we explore the validity of the RT-CIT to generate new knowledge about the incident – the searching CIT. In a mock terrorism study (n = 60) the searching RT-CIT allowed to detect crime information well above chance, with sampling error possibly underestimating its true potential. A simulation study confirms the potential of the searching RT-CIT, and identifies conditions under which it best performs. We used an archival data-set that met these conditions (high CIT effect, large number of item repetitions), and found better item classification performance than in the mock terrorism study. Although the classification is far from perfect, the searching RT-CIT could be a new, promising investigative tool to reveal new crime details to the investigative party.

scholarly journals Familiarity-based fillers improve the validity of reaction time-based memory detection

2016 ◽  
Author(s):  
Bruno Verschuere ◽  
Gáspár Lukács ◽  
Bennett Kleinberg
Keyword(s):  
Reaction Time ◽  
Real Life ◽  
Concealed Information Test ◽  
Test Protocol ◽  
Single Probe ◽  
Multiple Probe ◽  
Concealed Information ◽  
Information Test

The reaction time (RT)-based Concealed Information Test (CIT) allows for the detection of concealed knowledge (e.g., one’s true identity) when the questions are presented randomly (multiple-probe protocol), but its performance is much weaker when questions are presented in blocks (e.g., first question about surname, then about birthday; single-probe protocol). The latter test protocol, however, is the preferred and sometimes even the only feasible interviewing method in real-life. In a first, pre-registered, experiment (n = 363), we show that the validity of the single-probe protocol version can be substantially improved by including familiarity-related filler trials (e.g., “KNOWN,” “UNKNOWN”). We replicated these findings in a second, preregistered, experiment (n = 237), where we further found that the use of familiarity-related fillers even improved the classic multiple-probe protocol. We recommend the use of familiarity-related filler trials for the RT-based CIT.

scholarly journals Seen this scene? Scene recognition in the reaction-time Concealed Information Test

2020 ◽  
Vol 48 (8) ◽  
pp. 1388-1402
Author(s):  
Danielle G. Norman ◽  
Daniel A. Gunnell ◽  
Aleksandra J. Mrowiec ◽  
Derrick G. Watson
Keyword(s):  
Reaction Time ◽  
Scene Recognition ◽  
Concealed Information Test ◽  
Concealed Information ◽  
Information Test

scholarly journals Association-based Concealed Information Test: A Novel Reaction Time-Based Deception Detection Method

2019 ◽  
Author(s):  
Gáspár Lukács ◽  
Bartosz Gula ◽  
Emese Szegedi-Hallgató ◽  
Gábor Csifcsák
Keyword(s):  
Reaction Time ◽  
Deception Detection ◽  
Detection Method ◽  
Concealed Information Test ◽  
Accuracy Rate ◽  
Probe Item ◽  
Subject Design ◽  
Limited Applicability ◽  
Concealed Information ◽  
Information Test

In recent years, numerous studies were published on the reaction time (RT)-based Concealed Information Test (CIT). However, an important limitation of the CIT is the reliance on the recognition of the probe item, and therefore the limited applicability when an innocent person is aware of this item. In the present paper, we introduce an RT-based CIT that is based on item-category associations: the Association-based Concealed Information Test (A-CIT). Using the participants’ given names as probe items and self-referring “inducer” items (e.g., “MINE” or “ME”) that establish an association between ownership and responses choices, in Experiment 1 (within-subject design; n = 27), this method differentiated with high accuracy between guilty and innocent conditions. Experiment 2 (n = 25) replicated Experiment 1, except that the participants were informed of the probe item in the innocent condition—nonetheless, the accuracy rate remained high. Implications and future possibilities are discussed.

Sign in / Sign up

Export Citation Format

Share Document