Question

Writing an APA Style Results Section for a Repeated-Measures ANOVA As explained in prior modules, through your essays we are developing your ability to explain the results of statistical tests and your skills for writing statistical results in APA style As previously stated, it is not enough to know how to compute a calculation if you have no idea what that calculation means as it is applied to the research question. I have selected a problem with correct answers provided in the back of the text so that you can check your work and revise it if needed. This way you can focus on the explanation of the results in this assignment and not on the computation itself. Below I provide an outline of the information you must include in your explanation in the order it should appear For problem 11 on page 442 in your text, write a Results section in APA style for the repeated measures one-way ANOVA you computed (e.g., double spaced, labeled with the word 'Results centered at the top of the page, 1-inch margins, etc.). When writing your Results sections, you may find the following pages helpful: Gravetter & Wallnau pages 427-428; Green & Salkind pages 217; APA style manual pages 32-35,41-59, and 116-124. The APA style Results section should include a. a brief statement explaining the research by specifically mentioning the variable and its levels, b. a statement of the analysis used C, the probability of a Type l error (i.e., alpha level), d. the conclusion of the omnibus ANOVA in words supported by the results of the omnibus ANOVA in parentheses (i.e., the numbers formatted in APA style), e. a statement of the post hoc test used, f. the sample size, mean and standard deviation for each condition, g. a conclusion for each pairwise comparison in words supported by the statistical results of each pairwise comparison in parentheses (i.e., the numbers formatted in APA style) h. an explanation in words summarizing all differences for the variable examined. i. an explanation of the effect size 11. The endorphins released by the brain act as natural painkillers. For example, Gintzler (1970) monitored endorphin activity and pain thresholds in pregnant rats during the days before they gave birth. The data showed an increase in pain threshold as the pregnancy progressed. The change was gradual until 1 or 2 days before birth, at which point there was an abrupt increase in pain threshold. Apparently a natural painkilling mechanism was preparing the animals for the stress of giving birth. The following data represent pain threshold scores similar to the results obtained by Gintzler. Do these data indicate a significant change in pain threshold? Use a repeated-measures ANOVA with a .01. Days Before Giving Birth Subject 39 49 52 38 39 60 56 52 34

Answer 1

Go to the analysis, click ANOVA single factor. Enter input range B2:E6, enter significance level 0.01.

TIc null hypot he sig i8' gainkt the cuernctive Entet the dcdci in txal u 2

since, the p value is less than alpha, reject the null hypothesis

Anova: Single Factor SUMMARY Groups Column 1 Column 2 Column 3 Column 4 Count Sum Average Variance 13 22.5 13.5 195 200 230 275 39 40 46 ANOVA MS Source ofVariation Between Groups Within Groups 810 240 270 15 P-value F crit 18 2.22E-05 5.292214 16 Total 1050 19