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Unformatted text preview: 4-14-11Chapter 13 – Alternative Research DesignsSingle-Case Experimental Designs-Single-case experimental designoOne participant experimental design also known as N=1 designsoIncludes controls and manipulations just as in a typical experimentoPrecautions are taken to insure internal validity-Case-study approachoAn intense observation of a single individual with complete record of observations; Often used in clinical setting; descriptiveoNO manipulations or control of variables; no cause-effect conclusions can be drawn-1939-1963 (Dukes, 1965) found 246 single-case designs-Stats develoed in 1920s helped researchers use more complex research design; there are still researchers who use single-case designs (experimental analysis of behavior approach)oSkinner (1966): “Instead of studying a thousand rats for one hour each, or a hundred rats for 10 hours each, the investigator is likely to study one rat for a thousand hours” (p.21)”Uses of Single-Case Experimental Designs-Situations that require single-case designs:oUnique subject = no one else like them = cant find othersoPerfect generalizability; if very little variability among members of population then one individual will be enoughoSingle negative instance would refute a theory or an assumed universal...
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- Spring '11
- Statistics, experimental designs, Single-case experimental designs, single-case designs