scholarly journals The Guilty Knowledge Test and the Modified Stroop Task in Detection of Deception: An Exploratory Study

2003 ◽  
Vol 92 (2) ◽  
pp. 683-691 ◽  
Author(s):  
Iris M. Engelhard ◽  
Harald Merckelbach ◽  
Marcel A. van den Hout
Keyword(s):  
Stroop Task ◽  
Reaction Times ◽  
Lie Detection ◽  
Color Naming ◽  
Multiple Choice Questions ◽  
Knowledge Test ◽  
Guilty Knowledge Test ◽  
Modified Stroop ◽  
Stroop Paradigm ◽  
Mock Crime

The current study tested whether a simple Stroop paradigm can be used to detect deceptive behavior. 40 university students (34 women), half of whom committed a mock crime, were administered a Guilty Knowledge Test and modified Stroop task to detect guilt or innocence. The Guilty Knowledge Test is a well-known psychophysiological detection method, which consists of multiple-choice questions about details of the crime while skin conductance is recorded. Subjects possessing guilty knowledge are expected to show enhanced differential responses to the relevant stimuli. The modified Stroop task required color-naming of colored words related to the mock crime or an irrelevant crime. Each version of the Stroop task was presented in story form. Subjects possessing guilty knowledge were expected to produce larger reaction times to the relevant version relative to the irrelevant version. The test correctly identified 100% of innocent participants and 78% of guilty participants. In contrast, Stroop interference, i.e., reaction times for irrelevant crime details subtracted from those for mock crime details, did not differentiate between the two groups, suggesting that the story form of the Stroop paradigm is not suitable for lie detection.

Detection of Concealed Information: Combining a Virtual Mock Crime with a P300-based Guilty Knowledge Test

2009 ◽  
Vol 12 (3) ◽  
pp. 269-275 ◽  
Author(s):  
Jinsun Hahm ◽  
Hyung Ki Ji ◽  
Je Young Jeong ◽  
Dong Hoon Oh ◽  
Seok Hyeon Kim ◽  
...  
Keyword(s):  
Knowledge Test ◽  
Guilty Knowledge Test ◽  
Mock Crime ◽  
Information Combining ◽  
Concealed Information ◽  
Detection Of Concealed Information

scholarly journals An Examination of Word Relevance in a Modified Stroop Task in Patients with Chronic Low Back Pain

2005 ◽  
Vol 100 (3_suppl) ◽  
pp. 955-963 ◽  
Author(s):  
Jeffrey Roelofs ◽  
Madelon L. Peters ◽  
Geert Crombez ◽  
Bruno Verschuere ◽  
Johan W. S. Vlaeyen
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Stroop Task ◽  
Chronic Low Back Pain ◽  
Reaction Times ◽  
Self Report ◽  
Personal Relevance ◽  
Low Back ◽  
Attentional Processing ◽  
Modified Stroop

The present study examined the role of personal relevance of sensory pain-related words in selective attentional processing measured with a modified Stroop task administered to 30 patients with chronic low back pain. A related aim of this study was to introduce the application of multilevel analysis to test the influence of personal relevance on selective attentional processing in this sample. Patients completed the modified Stroop task, as well as a set of self-report measures aimed to assess Fear of Pain, Trait Anxiety, Catastrophizing, Pain Vigilance, and Pain Intensity. The modified Stroop task comprised 33 sensory pain-related words for which the personal relevance towards current concerns was rated afterwards by each participant on a 7-point Likert-type scale. The multilevel analyses did not support the hypothesis that personal relevance of sensory pain-related words interacted with Fear of Pain scores of patients in accounting for reaction times in naming the color of sensory pain-related words. None of the other self-report measures accounted for reaction times in isolation or in interaction with personal relevance. The modified Stroop task does not appear to be a robust measure of selective attentional processing in patients with chronic low back pain. The usefulness of other paradigms, such as the visual dotprobe task, should be explored in examining selective attentional processing in this population.

Effects of Thought Suppression on Subliminally and Supraliminally Presented Food-related Stimuli

2003 ◽  
Vol 20 (4) ◽  
pp. 223-230 ◽  
Author(s):  
Peter J.N. Dejonckheere ◽  
Caroline Braet ◽  
Barbara Soetens
Keyword(s):  
Attentional Bias ◽  
Stroop Task ◽  
Thought Suppression ◽  
Reaction Times ◽  
The Other ◽  
Dietary Behaviour ◽  
Control Group ◽  
Second Phase ◽  
Modified Stroop ◽  
Experimental Group

AbstractThis study investigates whether hyperaccessibility occurs for supraliminally or subliminally presented sweets-related stimuli after prior suppression of thoughts about sweets. Thirty-three students (all female; 18—25 years old) participated in the experiment. In the first phase, half of the experimental group was instructed to suppress all sweets-related thoughts. The other participants were given control instructions. In the second phase, as part of a modified Stroop task, participants were asked to state the colour of a stimulus as quickly as possible. This stimulus could be presented either subliminally or supraliminally. In both conditions, neutral control words as well as sweets words were used. It was found that the participants in the suppression group, compared to those in the control group, showed attentional bias for the sweet-related suppressed thoughts, but that this effect was determined by the reaction times of subliminally presented sweets words. No differences were found for the control words. In addition, the study explored whether there was a relationship between thought suppression and dietary restraint attitudes. The link to dietary behaviour, however, remains unclear.

scholarly journals Does long-term focus increase victim-blaming? A study on the just-world hypothesis using the modified Stroop task

2019 ◽  
Vol 20 (1) ◽  
pp. 33-50
Author(s):  
Zsuzsa Komáromy ◽  
◽  
Réka János ◽  
Keyword(s):  
Stroop Task ◽  
Reaction Times ◽  
Victim Blaming ◽  
Just World ◽  
Modified Stroop ◽  
Significant Difference ◽  
The World ◽  
Justice Motive ◽  
World Hypothesis

According to the just-world hypothesis (Lerner, 1980), people have an inherent need to believe that the world is a just place, where people generally get wha t they deserve. One of the benefits of holding this conviction is that it can promote investing in long-term goals. Acts of secondary victimization, such as blaming or derogating the victim can also be explained by just-world beliefs. This study looked at the effect of perceiving an innocent victim (a supposed threat to the belief in a just world) and long-term focus on the activation of the justice motive. We measured participants’ reaction times for justice-related and other stimuli with the help of the modified Stroop task (N=66). A significant difference between justice-related and neutral words has been found after being confronted with the threat to the belief in a just world, indicating that it indeed activated participants’ justice motive. Long-term focus did not have any significant effect. Higher levels of belief in a random world have been associated with greater victim-blaming tendencies.

Estimating the Validity of the Guilty Knowledge Test From Simulated Experiments: The External Validity of Mock Crime Studies.

2003 ◽  
Vol 9 (4) ◽  
pp. 261-269 ◽  
Author(s):  
David Carmel ◽  
Eran Dayan ◽  
Ayelet Naveh ◽  
Ori Raveh ◽  
Gershon Ben-Shakhar
Keyword(s):  
External Validity ◽  
Knowledge Test ◽  
Guilty Knowledge Test ◽  
Mock Crime

Implicit stereotyping and prejudice and the primed Stroop task

1999 ◽  
Vol 58 (4) ◽  
pp. 241-250 ◽  
Author(s):  
Kerry Kawakami ◽  
Kenneth L. Dion ◽  
John F. Dovidio
Keyword(s):  
Stroop Task ◽  
Color Naming ◽  
Stereotype Activation ◽  
Racial Categories ◽  
Black And White ◽  
Automatic Activation ◽  
Black Stereotypes ◽  
Implicit Prejudice ◽  
Implicit Stereotyping ◽  
Naming Latencies

In the present study, automatic stereotype activation related to racial categories was examined utilizing a primed Stroop task. The speed of participants' ink-color naming of stereotypic and nonstereotypic target words following Black and White category primes were compared: slower naming times are presumed to reflect interference from automatic activation. The results provide support for automatic activation of implicit prejudice and stereotypes. With respect to prejudice, naming latencies tended to be slower for positive words following White than Black primes and slower for negative words following Black than White primes. With regard to stereotypes, participants demonstrated slower naming latencies for Black stereotypes, primarily those that were negatively valenced, following Black than White category primes. These findings provide further evidence of the automatic activation of stereotypes and prejudice that occurs without intention.

A Unique Asymmetrical Stroop Effect in Absolute Pitch Possessors

2012 ◽  
Vol 59 (5) ◽  
pp. 272-278 ◽  
Author(s):  
Lilach Akiva-Kabiri ◽  
Avishai Henik
Keyword(s):  
Selective Attention ◽  
Stroop Task ◽  
Stroop Effect ◽  
Congruency Effect ◽  
Absolute Pitch ◽  
Naming Task ◽  
Color Naming ◽  
Reading Task ◽  
Pitch Processing ◽  
Reverse Pattern

The Stroop task has been employed to study automaticity or failures of selective attention for many years. The effect is known to be asymmetrical, with words affecting color naming but not vice versa. In the current work two auditory-visual Stroop-like tasks were devised in order to study the automaticity of pitch processing in both absolute pitch (AP) possessors and musically trained controls without AP (nAP). In the tone naming task, participants were asked to name the auditory tone while ignoring a visual note name. In the note naming task, participants were asked to read a note name while ignoring the auditory tone. The nAP group showed a significant congruency effect only in the tone naming task, whereas AP possessors showed the reverse pattern, with a significant congruency effect only in the note reading task. Thus, AP possessors were unable to ignore the auditory tone when asked to read the note, but were unaffected by the verbal note name when asked to label the auditory tone. The results suggest that pitch identification in participants endowed with AP ability is automatic and impossible to suppress.

scholarly journals The effect of high-frequency rTMS of the left dorsolateral prefrontal cortex on the resolution of response, semantic and task conflict in the colour-word Stroop task

2021 ◽  
Author(s):  
Benjamin A. Parris ◽  
Michael G. Wadsley ◽  
Gizem Arabaci ◽  
Nabil Hasshim ◽  
Maria Augustinova ◽  
...  
Keyword(s):  
Prefrontal Cortex ◽  
Task Performance ◽  
Stroop Task ◽  
Word Reading ◽  
Reaction Times ◽  
Task Conflict ◽  
General Effect ◽  
Task Set ◽  
Left Dlpfc ◽  
Dorsolateral Prefrontal

AbstractPrevious work investigating the effect of rTMS of left Dorso-Lateral Prefrontal Cortex (DLPFC) on Stroop task performance reports no changes to the Stroop effect but reduced reaction times on both congruent and incongruent trials relative to sham stimulation; an effect attributed to an enhanced attentional (or task) set for colour classification. The present study tested this account by investigating whether, relative to vertex stimulation, rTMS of the left DLPFC modifies task conflict, a form of conflict that arises when task sets for colour classification and word reading compete, given that this particular type of conflict would be reduced by an enhanced task set for colour classification. Furthermore, the present study included measures of other forms of conflict present in the Stroop task (response and semantic conflict), the potential effects on which would have been hidden in previous studies employing only incongruent and congruent stimuli. Our data showed that left DLPFC stimulation had no effect on the magnitude of task conflict, nor did it affect response, semantic or overall conflict (where the null is supported by sensitive Bayes Factors in most cases). However, consistent with previous research left DLPFC stimulation had the general effect of reducing reaction times. We, therefore, show for the first time that relative to real vertex stimulation left DLPFC stimulation does not modify Stroop interference. Alternative accounts of the role of the left DLPFC in Stroop task performance in which it either modifies response thresholds or facilitates responding by keeping the correct response keys active in working memory are discussed.

Differential Cued-Stroop Performance in Cognitively Asymptomatic Older Adults with Biomarker-Identified Risk for Alzheimer’s Disease: A Pilot Study

2018 ◽  
Vol 15 (9) ◽  
pp. 820-827 ◽  
Author(s):  
Ryan Van Patten ◽  
Anne M. Fagan ◽  
David A.S. Kaufman
Keyword(s):  
Alzheimer’S Disease ◽  
Older Adults ◽  
Alzheimer's Disease ◽  
Cerebrospinal Fluid ◽  
Stroop Task ◽  
Coefficient Of Variation ◽  
Reaction Times ◽  
Preclinical Alzheimer’S Disease ◽  
Cerebrospinal Fluid Biomarkers ◽  
Accuracy Rates

Background: There exists a need for more sensitive measures capable of detecting subtle cognitive decline due to Alzheimer's disease. Objective: To advance the literature in Alzheimer’s disease by demonstrating that performance on a cued-Stroop task is impacted by preclinical Alzheimer's disease neuropathology. Method: Twenty-nine cognitively asymptomatic older adults completed a computerized, cued-Stroop task in which accuracy rates and intraindividual variability in reaction times were the outcomes of interest. Cerebrospinal fluid biomarkers of Aβ42 and tau were measured and participants were then grouped according to a published p-tau/Aβ42 cutoff reflecting risk for Alzheimer’s disease (preclinical Alzheimer's disease = 14; control = 15). Results: ANOVAs indicated that accuracy rates did not differ between the groups but 4-second delay incongruent color-naming Stroop coefficient of variation reaction times were higher in the preclinical Alzheimer’s disease group compared to the control group, reflecting increased within-person variability. Moreover, partial correlations showed no relationships between cerebrospinal fluid biomarkers and accuracy rates. However, increases in coefficient of variation reaction times correlated with decreased Aβ42 and increases in p-tau and the p-tau/Aβ42 ratio. Conclusion: Results supported the ability of the computerized, cued-Stroop task to detect subtle Alzheimer’s disease neuropathology using a small cohort of cognitively asymptomatic older adults. The ongoing measurement of cued-Stroop coefficient of variation reaction times has both scientific and clinical utility in preclinical Alzheimer’s disease.

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