Statistical Methods for Psychology

when you go to other sources to look up nested (or random) designs you will often find the two discussed together. A final point ...

Table 13.12 contains the variance components for fixed and random variables for two- way factorial designs, where the subscripts ...

Thus We can now estimate for each effect: Partial Effects Both and represent the size of an effect (SSeffect) relative to the to ...

when it comes to factorial experiments, primarily because you have to decide what to con- sider “error.” They also become more c ...

We will return to working with the example from Eysenck’s (1974) study. The means and the analysis of variance summary table are ...

The difference between recall with high levels of processing and recall with low levels of processing is about two standard devi ...

one of four ways, ranging from the simple counting of letters in words to forming a visual image of each word. Participants in a ...

The Problem You can see what our problem is if we take a very simple 2 3 2 factorial where we know what is happening. Suppose th ...

use the average sample size, and that is actually quite close. Actually you will use the harmonic mean of the sample sizes. The ...

two-way, we took an A 3 B table of cell means, calculated , subtracted the main effects, and were left with. In the three-way, w ...

448 Chapter 13 Factorial Analysis of Variance Table 13.14 Illustration of calculations for 2 333 2 factorial design (a) Data B 1 ...

difference is only a matter of degree. Here we first obtain the for the three- dimensional matrix. This sum of squares represent ...

The summary table for the analysis of variance is presented in Table 13.14c. From this we can see that the three main effects an ...

Simple Interaction Effects With higher-order factorials, not only can we look at the effects of one variable at individual level ...

452 Chapter 13 Factorial Analysis of Variance 5 Class 1 Class 2 Variable B Day Night Dirt Class 1 Class 2 Variable B Dirt 10 15 ...

Although there is nothing to prevent someone from examining simple interaction effects in the absence of a significant higher-or ...

454 Chapter 13 Factorial Analysis of Variance (b) Summary Table from SPSS Tests of Between-Subjects Effects Dependent Variable: ...

Key Terms 455 Optimism/Pessimism Optimist Pessimist Mean Performance Ratio 1.04 1.02 1.00 0.98 0.96 0.94 0.92 Sex of subject Mal ...

456 Chapter 13 Factorial Analysis of Variance not this was their first child (primiparous versus multiparous) and on the basis o ...

Exercises 457 13.6 Plot the cell means in Exercise 13.5. 13.7 For the study in Exercise 13.5, to what would refer (if Awere used ...