30. Basic ethical guidelines for psychological researchers include A. Ensuring that participation is

involuntary. B. Harming the subjects when necessary. 

C. Minimizing confidentiality. D. Providing results and interpretations to participants.  

31. Which of the following best describes a double-blind experimental procedure? A. All subjects get the experimental procedure. B. Half the subjects get the experimental procedure, half the placebo; which they receive is known only to the experimenter. C. Half the subjects get the experimental procedure, half the placebo; which they receive is not known to subjects or experimenters. D. All subjects get the control procedure.  

32. A set of exact procedures that represent particular variables is called a(n) A. Abstract definition. B. Operational definition. C. Case study. D. Defining characteristic.  

33. A friend states that since he has been taking vitamin C, he has not had a single cold. His observation has little value in assessing the effects of vitamin C because A. There was no control group for comparison. B. He has not calculated a correlation coefficient. C. Of the effect of the observer on the observed. D. He does not specify his dosage of vitamin C  

34. A simple experiment has two groups of subjects called A. The dependent group and the independent group. B. The extraneous group and the independent group. C. The before group and the after group. D. The control group and the experimental group.  

35. An example of the “experimenter effect” would be a situation in which the experimenter A. Acts out the proper behavior for the subjects. B. Deceives the subject as to the real purpose of the experiment. C. Unknowingly hints to subjects what is expected of them. D. Overtly tells the subjects how to respond. 

 36. To investigate the effects of a particular study method on student performance, two different methods are tried, each with a different group of subjects. If only the experimenter knows which method is under investigation, the procedure being used is described as _____ A. Double-blind. B. Single-blind. C. Self-fulfilling prophesy. D. Representative sampling.  

37. According to studies, which of the following statement is true on how do Genes and Environment Work to Influence Predation? A. Complex traits and behaviors are usually produced by single genes B. Predatory offenders are universally male C. The male brain has 20% more area dedicated to aggression. D. The hippocampus is critical to prosocial human behavior  

38. The conditions that a researcher wishes to prevent from affecting the result are called A. Antecedent conditions B. Standard Error of Measurement C. Extraneous variables. D. Variability error. 

 39. A psychologist is interested in determining if the effects of Prozac Sarafem Zoloft drug at 10mg and 5mg varied at diff levels of symptom severity (highly depressed, mod depressed, and not depressed) will use _ statistical measures? A. t-test for correlated samples B. chi-square C. ANCOVA D. factorial ANOVA  

40. A variable, such as the personality of a subject, that might affect the outcome of an experiment would be controlled by A. Random assignment of subjects

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