거짓 진술의 인지부하가 안구움직임에 미치는 영향 = The effect of cognitive load during deception on eye movements

다국어 초록 (Multilingual Abstract)

This study examined the eye movements differences between the reverse order and the chronological order statement condition to find out the effective eye movement index for detecting deception. Participants (49 university students) conducted the missions in computer lab. After conduction mock crime, they were randomly allocated to the reverse order or chronological order conditions. Using eye-tracker, we measured the eye movements during statement. Lie group showed shorter saccade duration than truth group at both reverse order and chronological order statement condition. Lie group also showed less blink than truth teller in chronological order state condition. However, there was no difference of eye movements between lie and truth group in reverse order condition. Reverse order group also showed more frequent eye blink and fixation than chronological order group. It was suggested that emotional anxiety during reverse order statement would influence the eye movement. This study found that short saccade duration and less eye blink could be the effective eye movement indexes for the detect deception.

국문 초록 (Abstract)

본 연구에서는 거짓말자의 진술조건에 따른 인지부하의 차이가 안구움직임에 미치는 영향을 알아보고자 하였다. 이를 위해 49명의 실험참가자를 거짓 집단(24명)과 진실 집단(25명)으로 나누어 모의범죄를 수행시킨 후, 두 가지 진술조건(거꾸로 말하기, 바로 말하기)에서 진술하는 동안 안구움직임을 측정하였다. 실험 결과, 거짓 집단은 진실 집단에 비해 모든 진술조건에서 도약안구운동의 지속시간이 짧았으며, 바로 말하기 진술조건에서 눈 깜빡임 빈도가 유의미하게 낮았다. 이런 결과는 거짓말 집단에서는 거짓말의 인지부하로 인해 안구움직임은 거의 고정되거나 작은 범위로 움직이고, 눈 깜빡임이 줄어든다는 것을 의미한다. 하지만 상대적으로 높은 인지부하를 경험하는 거꾸로 말하기 진술조건에서는 두 집단 간 안구움직임의 차이는 유의미하지 않았고 바로 말하기 진술조건에 비해 전반적으로 눈 깜빡임과 짧은 시선고정을 자주 보였는데, 이는 인지부하뿐만 아니라 높은 정서불안과 관련이 있어 보인다. 본 연구는 의식적으로 통제가 불가능한 안구움직임을 사용하여 거짓말 탐지를 위한 안구움직임 지표를 탐색하였으며, 바로 말하기 조건으로 거짓말을 할 때 시선의 이동거리가 짧고 눈 깜빡임이 적은 행동을 보이는 것을 확인할 수 있었다.

참고문헌 (Reference)

1 조은경, "거짓말의 특징에 대한 신념 -경찰관과 대학생을 중심으로" 한국사회및성격심리학회 19 (19): 185-198, 2005

2 金正澤, "特性 不安과 社會性과의 關係" 고려대학교 대학원 1978

3 Vrij, A., "Why professionals fail to catch liars and how they can improve" 9 : 159-181, 2004

4 In-Albon, T., "Vigilance and avoidance of threat in the eye movements of children with separation anxiety disorder" 38 : 225-235, 2010

5 Zuckerman, M., "Verbal and nonverbal communication of deception, In Advances in experimental social psychology" Academic Press 1-59, 1981

6 Gog, T., "Uncovering cognitive processes : different techniques that can contribute to cognitive load research and instruction" 25 : 325-331, 2009

7 DePaulo, B. M., "The motivational impairment effect in the communication of deception, In Credibility assessment" Kluwer 51-70, 1989

8 Freeth, M., "The influence of visual saliency on fixation patterns in individuals with Autism Spectrum Disorders" 49 (49): 156-160, 2011

9 McCornack, S. A., "The generation of deceptive messages: Laying the groundwork for a viable theory of interpersonal deception, In Message production: Advances in communication theory" Lawrence Erlbaum 1997

10 Ekman, P., "Telling lies: Clues to deceit in the marketplace, politics and marriage" Norton 1992

11 Iqbal, S. T., "Task evoked pupillary response to mental workload in human-computer interaction" 1477-1480, 2004

12 Wallbott, H. C., "Stress specifics : Differential effects of coping style, gender, and type of stressor on autonomic arousal, facial expression, and subjective feeling" 61 : 147-156, 1991

13 Donkelaar, P., "Multiple saccades are more automatic than single saccades" 97 : 3148-3151, 2007

14 Spielberger, C. D., "Manual for the State-Trait Anxiety Inventory" Consulting Psychologists Press 1970

15 Walczyk, J. J., "Lying person-to-person about life events : A cognitive framework for lie detection" 58 (58): 141-170, 2005

16 Ekman, P., "Lying and nonverbal behavior : Theoretical issues and new findings" 12 : 163-176, 1988

17 Underwood, G., "Inspecting pictures for information to verify a sentence : Eye movements in general encoding and in focused search" 57 : 165-182, 2004

18 McCornack, S. A., "Information manipulation theory" 29 : 1-16, 1992

19 Vrij, A., "Increasing cognitive load to facilitate lie detection : The benefit of recalling an event in reverse order" 32 : 253-265, 2008

20 Ekman, P., "Face, voice, and body in detecting deceit" 15 : 125-135, 1991

21 Rayner, K., "Eye movements in reading and information processing : 20 years of research" 124 : 372-422, 1998

22 DePaulo, B. M., "Effects of importance of success and expectations for success on effectiveness at deceiving" 17 : 14-24, 1991

23 Dionisio, D. P., "Differentiation of deception using pupillary response as an index of cognitive processing" 38 : 205-211, 2001

24 Vrij, A., "Detecting lies and deceit: The psychology of lying and its implication for professional practice" John Wiley and Sons 2000

25 Vrij, A., "Detecting deception by manipulating cognitive load" 10 : 141-142, 2006

26 Vrij, A., "Detecting deceit via analysis of verbal and nonverbal behavior" 24 : 239-263, 2000

27 Zeghal, K., "Delegation of spacing tasks from controllers to flight crew: Impact of controller monitoring tasks" 2002

28 Vrij, A., "Deception detection, In Malingering and illness deception" Oxford University Press 348-362, 2003

29 DePaulo, B. M., "Cues to deception" 129 : 74-118, 2003

30 Van-Orden, K. F. V., "Combined eye activity measures accurately estimate changes in sustained visual task performance" 52 : 221-240, 2000

31 Walczyk, J. J., "Cognitive mechanisms underlying lying to question : Response time as a cue to deception" 17 : 755-774, 2003

32 Leal, S., "Blinking during and after lying" 32 : 187-194, 2008

33 Holland, M. K., "Blinking and thinking" 41 : 403-406, 1975

34 Holland, M. K., "Blinking and mental load" 31 : 119-127, 1972

35 Spence, S. A., "Behavioural and functional anatomical correlates of deception in humans" 12 : 2848-2853, 2001

36 Kohnken, G., "Behavioral correlates of statement credibility: Theories, paradigms, and results, In Criminal behavior and the justice system" Springer Verlag 271-289, 1989

37 Rognin, L., "Assessing the impact of a new instruction on air traffic controller monitoring tasks" 2004