PSYC 1010 Chapter Notes - Chapter 13: Sildenafil, Dependent And Independent Variables
20 May 2018
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PSYC 1010 Chapter 13 Notes
Introduction
Experiment Manipulation
• The procedure was double-blind
• Neither the men nor the person giving them the pills knew what they were receiving.
• The result: At peak doses, 69 percent of Viagra-assisted attempts at intercourse were
successful, compared with 22 percent for men receiving the placebo (Goldstein et al.,
1998).
• For many, Viagra worked.
• This simple experiment manipulated just one factor: the drug dosage (none versus peak
dose).
• We call this experimental factor the independent variable because we can vary it
idepedetl of othe fatos, suh as the e’s age, eight, ad pesoalit.
• Other factors, which can potentially influence the results of the experiment, are called
confounding variables.
• Random assignment controls for possible confounding variables.
• Experiments examine the effect of one or more independent variables on some
measurable behavior
• The dependent variable because it can vary depending on what takes place during the
experiment.
• Both variables are given precise operational definitions, which specify the procedures
that manipulate the independent variable (the precise drug dosage and timing in this
study)
• Measure the depedet aiale the uestios that assessed the e’s esposes.
• These definitions provide a level of precision that enables others to repeat the study.
• Let’s pause to hek ou udestadig usig a siple psholog epeiet
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