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21)In a study on hand-to-eye coordination, Dr. Blink uses a computer to present stimuli and record particpant responses. This method of experimental control is called A)automation. B)subjective measures. C)double-blind. D)single-blind. 22)Data obtained by multiple observers is useful in controlling A)experimenter effects. B)subject effects. C)placebo effects. D)social desirability. 23)The balanced placebo design used by Marlatt to study the effects of alcohol on behavior represents A)a tasty placebo. B)an elaborate use of deception. C)a complicated statistical design. D)the first time a placebo was used in alcohol research. 24)In addition to blind control procedures, an effective method that reduces experimenter-participant contact and potential biases is A)attentional controls. B)placebo controls. C)automation. D)replication. 25)To avoid experimenter bias, a general rule of thumb is to A)test participants and score data as blindly as possible. B)test participants and interpret data as blindly as possible. C)score and interpret data as blindly as possible. D)hire research assistants. 26)Which of the following reduces experimenter/participant contact? A)Double-blind control procedure. B)Automation. C)Use of deception. D)Use of placebos. 27)Objective measures are based on A)empirical observations of nonspecific scientific events. B)empirical observations about objects. C)empirically observable and clearly specified events about which two or more people agree. D)subjectively observable and clearly specified events. 28)Subjective measures are based on A)observations about which two or more people agree. B)observations about clearly specified events. C)clearly specific and/or unobservable events. D)general impressions of the observers. 29)A researcher wants to do a study of pretest anxiety. He devises two possible ways of measuring pretest anxiety: (1) attaching electrodes to the palm and measuring the amount of sweat produced; (2) having observers rate participants on how anxious they look. Which of the following is TRUE? A)Both are subjective measures. B)Both are objective measures. C)#1 is objective; #2 is subjective. D)#1 is subjective; #2 is objective. 30)Which of the following is correct? A)Objective measures are less prone to experimenter biases than subjective measures. B)Subjective measures are less prone to experimenter biases than objective measures. C)Objective and subjective measures are equally prone to experimenter biases. D)Neither objective nor subjective measures are prone to experimenter biases.Â

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