Part 1: Please read the following scenarios. For each scenario, answer the following questions: a) what is the independent variable, b) what is the dependent variable, and c) is this a between-subjects or within-subjects design? A pharmaceutical company developed a new drug to relieve anxiety and hired a research organization to investigate the potential effectiveness of the drug. The researchers contacted a group of psychiatric patients who were experiencing chronic anxiety and randomly assigned half of the patients to the drug group and half of the patients to the placebo group. To avoid any possible confusion in administering the drug or placebo to the patients, one psychiatric nurse always administered the drug and another nurse always administered the placebo. However, to control experimenter expectancy effects, the nurses did not know which drug they were administering. One month later the drug group had dramatically improved compared to the placebo group, and the pharmaceutical company concluded that the new anti-anxiety medication was effective.

a) Independent variable is the one which is manipulated or changes in a study to see its effect on…

Answered: Part 1: Please read the following…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Part 1: Please read the following scenarios. For each scenario, answer the following questions: a) what is the independent variable, b) what is the dependent variable, and c) is this a between-subjects or within-subjects design?

A pharmaceutical company developed a new drug to relieve anxiety and hired a research organization to investigate the potential effectiveness of the drug. The researchers contacted a group of psychiatric patients who were experiencing chronic anxiety and randomly assigned half of the patients to the drug group and half of the patients to the placebo group. To avoid any possible confusion in administering the drug or placebo to the patients, one psychiatric nurse always administered the drug and another nurse always administered the placebo. However, to control experimenter expectancy effects, the nurses did not know which drug they were administering. One month later the drug group had dramatically improved compared to the placebo group, and the pharmaceutical company concluded that the new anti-anxiety medication was effective.

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