A-AS Level (CIE) Psychology: Specimen Questions with Answers 210 - 211 of 299

Explanation

• Experimenter wants to study the effect of noise upon the task performance in an industry. Here the independent variable is the noise and the dependent variable is task performance.
• Experimenter may manipulate the noise by dividing into three categories- Continuous noise, Intermittent noise and no noise
• Hence IV variable is called as manipulated variable
• He may now examine its effect upon the task performance which cannot be manipulated and it is the outcome variable

Explanation

Vaginal Photoplethysmograph developed by James Geer and his associates. This device, which is smaller than tampon, is inserted by the woman into her vagina. A light source at the tip of the instrument and two light sensitive photoreceptors on the sides of the instrument measure the amount of light reflected back from the vaginal walls. Because blood flows to the vaginal walls during arousal, the amount of light passing through them with increasing arousal. It is the psycho physiological assessment of sexual arousal