Decision about null hypotheses: For each of the following fictional conclusions,

Question

Decision about null hypotheses: For each of the following fictional conclusions, state whether the researcher seems to have rejected or failed to reject the null hypothesis (contingent, of course, on the inferential statistics having backed up the statement). Explain the rationale for youe decision.

a. When false information is repeated several times, people seem to be more likely, on average, to develop false memories than when the information is not repeated.

b. Therapy clients with Major Depressive Disorder who have ongoing structured assessments of therapy seem to have lower post-therapy depression levels, on average, than do clients who do not have ongoing structured assessments.

c. Employee morale does not seem to be different, on average, whether employees workin cubicles or in enclosed offices.

d. A child's native language does not seem to be different in strength, on average, whether the child is raised to be bilingual or not.

Explanation / Answer

Null Hypothesis is the claim that there is no significant difference between the means of two groups bein tested, ie there is no difference between the group on whatever construct is being tested, and any difference which exists is coincidental or by chance.

1. Null Hypothesis is rejected, the conclusion states that the two groups - one with repeated information and other with non repetition , differ in terms of forming false memories.

2.Null Hypothesis is rejected, the conclusion states that the two therapy groups - one with structured assessments and other without structure assessments, differ in terms of post-therapy depression levels.

3.Null Hypothesis is accepted.There is no difference in morale of employees in both conditions, with closed offices and with cubicles.

?4.Null Hypothesis is accepted.There is no difference in strength of native language in children in both conditions, raised as bilingual and not bilingual.

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