Question

Ten female and 10 male participants saw a series of words on a computer screen. Each time, a word (either relating to positive emotion or negative emotion) was presented on a screen for 1500 ms. Researchers asked participants to press the space bar on the keyboard as soon as possible if they had seen either a positive or a negative word but hold the response if they had seen a neutral word. Half of the participants from each sex group only saw positive words or neutral words; the other half from each sex group only saw negative words or neutral words. The response was reaction time in milliseconds (e.g., how long it took the subject to make a response).

Use the data presented in Tables 1-2 to complete Table 2 and perform appropriate statistical analyses to answer the question: Did the variables sex and the type of words (positive vs. negative) combined make a difference on the reaction time? If so, how? Please state the reason for your answer.

            Table 1. The mean (ms) of reaction time in each condition

		Sex (S)
		Female	Male
Type of word (W)	Positive	450	475
	Negative	550	480

Table 2. ANOVA Table

Source	SS	df	MS	F
Sex (S)	____	___	___	___
Type of word (W)	____	___	___	___
S×W	____	___	___	___
Error	_____	___	___
Total	35,000	___

Answer 1