Table 4. Experiment 1 means and statistics for mood assessment, task compliance, game enjoyment and difficulty for the 10-min experimental manipulation which did not differ between conditions.

Measure	No-task (n = 20)		Tetris (n = 20)		Pub Quiz (n = 20)		ANOVA/t-test
	mean	sem	mean	sem	mean	sem
Post-condition mood	5.81	1.08	4.23	0.79	3.86	0.92	F (2,57) = 1.19 (NS)
Task compliance	8.78	0.20	8.45	0.36	8.89	0.24	F (2,57) = 0.48 (NS)
Game enjoyment	-	-	7.36	0.33	7.18	0.32	t(38) = 0.37 (NS)
Game difficulty	-	-	3.68	0.49	3.69	0.43	t(38) = 0.01(NS)