Pertanyaan
9. Lie detectors do not detect lies . They record a person's physiological reaction to certain questions. Basically, the instrument records four physiological activities on a moving roll of graph paper. Two pens are driven by air-filled tubes placed around a subject's chest and stomach to record breathing movements . Another pen, connected to a blood-pressure cuff on the subject's arm, records each heartbeat and traces changes in blood pressure. The fourth pen is connected to a pair of metal electrodes attached to the fingers of one hand. This pen records changes in the electrical resistance of the skin and can indicate subtle sweating . In administering the test, examiners usually ask neutral questions such as birth dates or addresses in order to compare these responses with those from emotionally charged questions. Physiological reactions include all of the following EXCEPT. __ breathing movements posture differences heartbeats blood changes subtle sweating
Jawaban
posture differences
Penjelasan
Lie detectors, atau alat deteksi kebohongan, mencatat reaksi fisiologis seseorang terhadap pertanyaan tertentu. Alat ini merekam empat aktivitas fisiologis pada gulungan kertas grafik yang bergerak. Dua pena digerakkan oleh tabung berisi udara yang ditempatkan di sekitar dada dan perut subjek untuk mencatat gerakan pernapasan. Pena lainnya, yang terhubung ke balutan tekanan darah di lengan subjek, mencatat setiap detak jantung dan melacak perubahan tekanan darah. Pena keempat terhubung ke sepasang elektroda logam yang dipasang di jari-jari satu tangan. Pena ini mencatat perubahan dalam resistensi listrik kulit dan dapat menunjukkan keringat halus. Saat mengadministrasikan tes, penguji biasanya mengajukan pertanyaan netral seperti tanggal lahir atau alamat untuk membandingkan respons ini dengan respons dari pertanyaan yang memicu emosi.
Reaksi fisiologis mencakup semua hal berikut KECUALI:
- gerakan pernapasan
- perbedaan postur
- detak jantung
- perubahan darah
- keringat halus
2.
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