As these two examples show, the two-tailed test enters the fray when the researcher has a strong claim in place and ventures to falsify it. Alas, this is not the typical situation for the ...
Instead of following up these interactions with simple F tests (Keppel, 1991), Lammers et al. use two-tailed t tests and promptly find some of p > .05. They don't bother with the post-hoc move to a ...
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