Statistical Methods for Psychology

458 Chapter 13 Factorial Analysis of Variance Conditioned Stimulus Tone Vibration High Med Low High Med Low Control 11 16 21 19 ...

Exercises 459 13.31 An educational researcher wanted to test the hypothesis that schools that implemented strict dress codes pro ...

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CHAPTER 14 Repeated-Measures Designs CHAPTER 14 Repeated-Measures Designs Objectives To discuss the analysis of variance by cons ...

IN OUR DISCUSSION OF THE ANALYSIS OF VARIANCE, we have concerned ourselves with exper- imental designs that have different subje ...

One laborious way to do this would be to put all the subjects’ contributions on a com- mon footing by equating subject means wit ...

14.1 The Structural Model First, some theory to keep me happy. Two structural models could underlie the analysis of data like th ...

and Given an additional assumption about sphericity, which we will discuss in the next section, both of these lead to respectabl ...

On the main diagonalof this matrix are the variances within each treatment ( ). Notice that they are all more or less equal, ind ...

Section 14.4 Analysis of Variance Applied to Relaxation Therapy 467 Table 14.3 Analysis of data on migraine headaches (a) Data B ...

From Table 14.3b you can see that is calculated in the usual manner. Similarly, and are calculated just as main effects always a ...

synonymous with. (A subject total and an individual score are identical.) As a result, differences among subjects would be insep ...

We can test this contrast with either a tor an F, but I will use there. (Fis just the square of t.) This is a ton dferror 532 df ...

14.6 Writing Up the Results In writing up the results of this experiment we could simply say: To investigate the effects of rela ...

472 Chapter 14 Repeated-Measures Designs Table 14.4 Ambulatory behavior by Group and Trial (a) Data Interval 123456 Mean Control ...

be subdivided into three components—the main effect of Intervals (the repeated measure) and its interactions with the two partit ...

If we temporarily ignore intervals entirely (e.g., we simply collect our data over the en- tire session rather than breaking it ...

anticipated tolerance effect, and looking at the Different group, you see that it is much more like the Control group than it is ...

Group is the same as the variance of subject means within every other level of Group. If necessary, this assumption can be teste ...

within-subjects portion of the analysis of variance will be approximately distributed as Fon (i 2 1) , g(n 2 1)(i 2 1) dffor the ...