• Korean Journal of Forensic Psychology
• /
• v.12 no.1
• /
• pp.53-73
• /
• 2021

This study is an experimental study comparing the psycho-physiological response differences of subjects according to the rapport building in polygraph tests. We randomly assigned 84 adults into a 2(veracity: Truth vs. Lie) x 2(rapport; Rapport building vs. Non-rapport building) between-subject design and measured ESS total scores as psycho-physiological responses. In order to manipulate the veracity conditions, participants in the truthful condition were told to tell their actual scores on several simple tasks but those in the lie condition were asked to tell higher scores than their actual scores. Afterwards all participants were polygraph tested in the order of pre-interview and main examination. The rapport conditions were manipulated by structured pre-interview scripts. As a result, there were significant differences in the examinee's total ESS scores depending on the veracity and rapport conditions. For truth-tellers, the ESS total scores were greater in the positive(+) direction in the rapport building condition than in the non-rapport building condition, indicating a prominent true response in the former condition. For liars, however, the ESS total scores were not significantly greater in the negative(-) direction in the rapport building condition than in the non-rapport building condition. Based on this study's results, we discussed the importance of rapport building in the pre-interview phase of a polygraph test and the need to operationalize verbal and non-verbal rapport building techniques.

• Sleep Medicine and Psychophysiology
• /
• v.14 no.2
• /
• pp.99-106
• /
• 2007

Objective: Restless legs syndrome (RLS) is known to be associated with chronic renal failure (CRF) patients on hemodialysis, however the prevalence of RLS in CRF patients on hemodialysis is variable due to different diagnostic criteria or dialysis technique. A few reports have indicated the association between RLS symptom and lower life quality in CRF patients on hemodialysis. This study aims to investigate the prevalence of RLS and its association with the quality of life in CRF patients of a single dialysis unit in Korea. Methods: A total of 83 Korean CRF patients on hemodialysis in the Korea University Hospital were examined. International Restless Legs Syndrome Study Group (IRLSSG) criteria and International Restless Legs Scale (IRLS) were used to determine the diagnosis and severity of RLS. Questionnaires including Athens Insomnia Scale (AIS), Epworth sleepiness scale (ESS), and Medical Outcome Study Form-36 (SF-36) were administered to all the patients for the assessment of sleep and quality of life. Hamilton Depression Rating Scale (HDRS) and Clinical Global Impression (CGI) were also measured for depression and status of mental illness by psychiatrist. Results: Of the 83 patients, 31 (37.3%) patients were found to have RLS and 43 (51.8%) patients met at least one of the RLS diagnostic criteria. The AIS (t=2.40, p=0.019), ESS (t=2.41, p=0.018), HDRS (t=3.85, p<0.001) and CGI (t=3.52, p=0.001) were higher in the subjects with RLS compared to other subjects. The SF-36 scores were significantly lower in the patients with RLS except physical functioning and bodily pain. Total (p=0.005), physical component (p=0.019), and mental component scores (p=0.019) of SF-36 were significantly lower in patients with more severe RLS symptoms. Conclusion: There was significant relationship between RLS and poor quality of sleep and life. More severe RLS symptom was proven to be an important factor to make a quality of life worsen.

• Sleep Medicine and Psychophysiology
• /
• v.19 no.2
• /
• pp.77-83
• /
• 2012

Objectives: Recent studies have reported a correlation between obstructive sleep apnea syndrome (OSA) and depression. In attempt to verify the suggestion that eveningness is related to depression, we examined the effect of morningness-eveningness on their depressive mood in patinets with OSA. Methods: The examination was based on the medical records and polysomnography reports of 211 OSA patients. Information was gathered from the patients who filled out the H$\ddot{o}$rne and Ostberg questionnaire (HOQ), profile of mood states-Korean version (K-POMS), and Epworth sleepiness scale (ESS). We compared mean values of K-POMS total, subscales of K-POMS, ESS, and OSA severity variables among the 3 morningness-eveningness groups (morningness, eveningness, and neither groups). Partial correlation analysis was performed between variables and ANCOVA was performed among the 3 groups after adjustment with age and weight. Results: There were significant negative correlations between HOQ and the followings : K-POMS total, POMS-T (tension-anxiety), POMS-D (depression-dejection), POMS-A (anger-hostility), POMS-F (fatigue-inertia), POMS-C (confusion-bewilderment), spontaneous arousal index, average O2 saturation. There were significant positive correlations between HOQ and the followings : POMS-V (vigor-activity), apnea-hypopnea index, respiratory arousal index, snore time. There were significant negative correlations between POMS-D and the followings : HOQ, POMS-V, stage 1 sleep (%), AHI, TAI (total arousal index), oxygen desaturation index, respiratory arousal index, neck circumference, average O2 desaturation, snore time (%). There were significant positive correlations between POMS-D and K-POMS total, POMS-T, POMS-A, POMS-F, POMS-C, sleep latency, stage 2 sleep (%), heart rate, spontaneous arousal index. There were significant differences in K-POMS total, POMS-T, POMS-D, POMS-F, POMS-C, spontaneous arousal index among the three HOQ groups in ANCOVA. Conclusion: The depressive correlates of OSA patients might be affected, not by excessive daytime sleepiness or OSA severity indexes, but by eveningness circadian characteristics. It would be important to take into account the morningness-eveningness tendency when we manage the depressive mood of OSA patients.