Single Subject Research Designs 3.22

Single Subject Research Designs 3.22 - Click to edit Master...

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Unformatted text preview: Click to edit Master subtitle style Single-Subject Research Designs Research Methods PSYC E226 3/22/10 Learning Objectives  Know how single-subject design studies are evaluated  Be able to identify four types of single-subject design  Know ways that single-subject design is different from group study design  Identify strengths and weaknesses of single- subject design Single-subject design  Single-subject studies are studies with one participant  Also known as single-case design studies  Though not fully experimental, they aim to establish cause and effect Single-Subject Design  These were more common in earlier psychological research (think Freud)  More commonly used now in clinical research Participant is measured several times A treatment is administered Participant is measured several times again to look for change Measuring single-subject data  Measured in phases , or a series of observations under the same conditions  Before a treatment, baseline observations are collected in the baseline phase This data represents what the participant is normally like without treatment  After a treatment, treatment observations are Unstable Data  What to do if you have an unstable pattern of data over time? Wait it out. The participant may be responding to having data collected, and may even out over time Look for patterns in the inconsistency...
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Single Subject Research Designs 3.22 - Click to edit Master...

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