說謊為人類交流的一部分；儘管至今為止沒有一個既定的線索被認定為是說謊時的特徵，一般相信因人們在說謊時有較大的認知負載，導致某些語言及視覺上的特定表現發生。此研究中訪問了23名21至29歲參與者收集到共498個誠實及撒謊的回答，然後用臉部特徵點定位系統偵測出臉部特徵點後建構三種臉部線索作謊言偵測。三種線索分別為臉部特徵點距離對中立表情的變化，特徵點距離平均變化量及眨眼頻率。羅吉斯迴歸用於探討二元類別依變數（誠實或撒謊的回答）及建構的臉部線索之關係。結果顯示緊張的行為如嘴唇緊閉及較低的眨眼頻率跟說謊有顯著關係。

Deception is part of human interaction. Even though there is not a specific clue ties to deception, it is believed that certain verbal and nonverbal cues can be observed on liars due to heavy cognitive load needed for deception. In this study, 23 participants, age ranged from 21 to 29, were interviewed to collect a total of 498 truthful and deceptive responses, and then three facial cues were automatically constructed with a public facial landmark detection system for deception detection. The three cues included participants’ facial landmark distance change over neutral state, average facial landmark distance variation over frames and blinking frequency in a response. With a binary dependent variable as truthful and deceptive responses, logistic regression was used to study the relation between facial cues and deception. Result shows that tense behaviors as tightening lips and lower blinking frequency are significantly related to deception.

摘要 ii
Abstract iii
Table of Contents iv
List of Figures v
List of Tables vi
1 Introduction 1
2 Literature Review 2
3 Methodology 5
3.1 Data Collection 5
3.2 Definition of Variables 7
3.3 Logistic Regression 12
3.4 Model Selection Criteria 13
4 Result 14
4.1 Response Summary 14
4.2 Variable Summary 15
4.3 Logistic Regression Model 19
4.4 Classification 23
5 Conclusion 24
Reference 26

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