Statistical Methods for Psychology

Source

Type III Sum

of Squares df Mean Square F Sig.

Cycle Sphericity

Assumed

3064.875 3 1021.625 17.166 .000

Greenhouse-

Geisser

3064.875 2.275 1347.224 17.166 .000

Huynh-Feldt 3064.875 2.809 1091.085 17.166 .000

Lower-bound 3064.875 1.000 3064.875 17.166 .000

Cycle * Group Sphericity

Assumed

1905.250 6 317.542 5.336 .000

Greenhouse-

Geisser

1905.250 4.550 418.744 5.336 .001

Huynh-Feldt 1905.250 5.618 339.131 5.336 .000

Lower-bound 1905.250 2.000 952.625 5.336 .013

Error(Cycle) Sphericity

Assumed

3749.375 63 59.514

Greenhouse-

Geisser

3749.375 47.774 78.481

Huynh-Feldt 3749.375 59.989 63.560

Lower-bound 3749.375 21.000 178.542

Source

Type III Sum of

Squares df Mean Square F Sig.

Intercept 126585.375 1 126585.375 449.008 .000

Group 8212.750 2 4106.375 14.566 .000

Error 5920.375 21 281.923

Section 14.10 Intraclass Correlation 495

Table 14.13 (continued)

b) Within-subject effects (Group 3 Cycle at Phase II)
Test of Between-Subjects Effects
Measure: MEASURE_1
Transformed Variable: Average

Tests of Within-Subjects Effects

Measure: MEASURE_1

From the simple interaction effects of Group 3 Cycle at each level of Phase, you can

see that Bouton and Swartzentruber’s predictions were upheld. There is no Cycle 3 Group

interaction on Shock trials, but there is a clear interaction on No-shock trials.

14.10 Intraclass Correlation

One of the important issues in designing experiments in any field is the question of the re-

liability of the measurements. Most of you would probably expect that the lastplace to

look for anything about reliability is in a discussion of the analysis of variance, but that is