Vandenbosch Katrien, Verschuere Bruno, Crombez Geert, De Clercq Armand
Department of Psychology, Ghent University, Henri Dunantlaan 2, B-9000 Ghent, Belgium.
Int J Psychophysiol. 2009 Feb;71(2):118-23. doi: 10.1016/j.ijpsycho.2008.07.015. Epub 2008 Jul 28.
Building on the orienting theory of the Concealed Information Test, Elaad and Ben-Shakhar [Elaad, E., & Ben-Shakhar, G. (2006). Finger pulse waveform length in the detection of concealed information. Int. J. Psychophysiol., 61, 226-234.] proposed a new measure for the detection of concealed information: finger pulse line length (FPLL). This measure is recorded with a plethysmograph and combines pulse rate and pulse amplitude. Because the validity of finger pulse amplitude is still not established, one could question the benefits of FPLL to well validated measures such as heart rate. In the present study we compared the validity of FPLL, finger pulse rate and finger pulse amplitude in the detection of concealed information. Male community volunteers (n=77) who had acquired crime knowledge through a mock crime procedure, were instructed to deny knowledge in a Concealed Information Test. Skin conductance, finger pulse line length, finger pulse rate and amplitude, heart rate and respiration were recorded. FPLL validity was significantly higher than that of finger pulse amplitude and heart rate. These data, together with its ease of measurement, support the use of FPLL.
基于隐蔽信息测试的定向理论，埃拉德和本 - 沙哈尔[埃拉德，E.，& 本 - 沙哈尔，G.（2006年）。检测隐蔽信息时的手指脉搏波形长度。《国际心理生理学杂志》，61卷，226 - 234页。]提出了一种检测隐蔽信息的新指标：手指脉搏线长度（FPLL）。该指标通过体积描记器记录，结合了脉搏率和脉搏幅度。由于手指脉搏幅度的有效性尚未确立，人们可能会质疑FPLL相对于诸如心率等已得到充分验证的指标的优势。在本研究中，我们比较了FPLL、手指脉搏率和手指脉搏幅度在检测隐蔽信息方面的有效性。通过模拟犯罪程序获取犯罪知识的男性社区志愿者（n = 77），被要求在隐蔽信息测试中否认相关知识。记录了皮肤电导率、手指脉搏线长度、手指脉搏率和幅度、心率及呼吸情况。FPLL的有效性显著高于手指脉搏幅度和心率。这些数据，连同其易于测量的特点，支持了FPLL的应用。
