COMPARISON OF BETWEEN VERSUS WITHIN- SUBJECTS DESIGN

.		FACTOR A (VIDEOGAME VIOLENCE)
FACTOR B (PROVOCATION)		Low (A1)	Medium (A2)	High (A3)
NOT PROVOKED (B1)
		6	6	10
		4	5	10
		5	5	9
		2	3	7
		1	2	6
		1	0	5
PROVOKED (B2)
		6	6	6
		5	6	5
		5	5	4
		2	2	2
		2	2	2
		1	1	1

First, code the data as if it came from a totally between subjects design using 36 participants. Second, code the the same data as totally within-subjects design where six participants are exposed to all six conditions. Third, analyze the data from the two analyses (note that your book provides links to statistical calculators you can use to do such analyses). Finally, compare the results of the two analyses. Which design appears to be more powerful? Why?

CODING DATA AS IF IT WERE FROM A BETWEEN-SUBJECTS DESIGN

.		FACTOR A VIDEOGAME VIOLENCE
FACTOR B (PROVOCATION)		Low (A1)		Medium (A2)		High (A3)
NOT PROVOKED (B1)
		P.1	6	P.7	6	P.13	10
		P.2	4	P.8	5	P.14	10
		P.3	5	P.9	5	P.15	9
		P.4	2	P.10	3	P.16	7
		P.5	1	P.11	2	P.17	6
		P.6	1	P.12	0	P.18	5
PROVOKED (B2)
		P. 19	6	P.25	6	P.31	6
		P. 20	5	P.26	6	P.32	5
		P.21	5	P.27	5	P.33	4
		P.22	2	P.28	2	P.34	2
		P. 23	2	P.29	2	P.35	2
		P. 24	1	P.30	1	P.36	1

CODING DATA AS IF IT WERE FROM A WITHIN-SUBJECTS DESIGN

.		FACTOR A VIDEOGAME VIOLENCE
FACTOR B (PROVOCATION)		Low (A1)		Medium (A2)		High (A3)
NOT PROVOKED (B1)
		P.1	6	P.1	6	P.1	10
		P.2	4	P.2	5	P.2	10
		P.3	5	P.3	5	P.3	9
		P.4	2	P.4	3	P.4	7
		P.5	1	P.5	2	P.5	6
		P.6	1	P.6	0	P.6	5
PROVOKED (B2)
		P. 1	6	P.1	6	P.1	6
		P. 2	5	P.2	6	P.2	5
		P.3	5	P.3	5	P.3	4
		P.4	2	P.4	2	P.4	2
		P.5	2	P.5	2	P.5	2
		P. 6	1	P.6	1	P.6	1

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