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Ch 3 Sex Research.docx

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Department
Psychology
Course
Psychology 2075
Professor
Corey Isaacs
Semester
Fall

Description
Sex Research 10/19/2012 7:43:00 PM Chapter 3 Issues in Sex Research  Sampling o Population – first step in conducting sex research, a group of people a researcher wants to study and make inferences about o Sample – a part of a population  Probability sampling – a method of sampling in which each member of the population has a known probability of being included in the sample  Random sampling – an excellent method, in which each member of the population has an equal chance of being selected  Stratified random sampling – a method in which the population is divided into groups and then random sampling occurs in each group  Sampling proceeds in three phases:  The population is identified  A method for obtaining a sample is adopted  The people in the sample are contacted and asked to participate  Problem of refusal or non-response – the problem that some people will refuse to participate in a sex survey, making it difficult to have a random sample  Volunteer bias – a bias that arises when some people refuse to participate so that those who are in the sample are volunteers who may differ from those who refused  Convenience sample – a sample chosen in a haphazard manner relative to the population of interest, not a random or probability sample o Accuracy of self reports or self behavior  Purposeful distortion – purposely giving false information in a survey  Social desirability – the tendency to distort answers to a survey in the direction perceived to be more acceptable o Evidence on the reliability of self-reports  Test-retest reliability – a method for testing whether self-reports are reliable or accurate  Participants are interviewed or given a questionnaire and then interviewed a second time later on the determine whether their answers match  Interviews vs. questionnaires o Computer-assisted self-interview method (CASI) – a method of data collection in which the respondent fills out questionnaires on a computer  Web-Based Surveys o Can recruit much larger samples
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