Group	PreTest	PostTest	
Treatment	18	24	
Treatment	18	25	
Treatment	21	33	
Treatment	18	29	
Treatment	18	33	
Treatment	20	36	
Treatment	23	34	
Treatment	23	36	
Treatment	21	34	
Treatment	17	27	
Control	18	29	
Control	24	29	
Control	20	24	
Control	18	26	
Control	24	38	
Control	22	27	
Control	15	22	
Control	19	31	