1 / 23

Quasi-Experimental Designs Nonequivalent Comparison Groups

Classical experimental design relies on researcher's ability to control the settingManipulation of at least 1 Ind. variableRandom assignment of subjects to groupsRandom assignment of Ind. Variable to group(s)Exposure of experimental group to treatment in isolationThis not very practical in so

chad
Download Presentation

Quasi-Experimental Designs Nonequivalent Comparison Groups

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


    1. Quasi-Experimental Designs Nonequivalent Comparison Groups Chad Reed March 12, 2008

    2. Classical experimental design relies on researcher's ability to control the setting Manipulation of at least 1 Ind. variable Random assignment of subjects to groups Random assignment of Ind. Variable to group(s) Exposure of experimental group to treatment in isolation This not very practical in social research Introduction

    3. When all classic requirements can’t be met Quasi-Experimental Designs (QEDSs) will be used As many requirements will be used as possible, but other measures are adopted to offset threats to Internal Validity Key Component Groups are Not Randomly Assigned Step Away from the Classic Model

    4. Structured much like pretest-posttest experiments but lack the randomized designs How then are Participants Selected to Each Group? Self Selection Administrator Assignment Different treatments at different sites Nonequivalent Groups

More Related