A(n) ______ tells us if the differences across the levels of one factor are the same or different for each level of the other factor.

The death of a _______ is usually the most difficult loss an adult can face.

Fill in the blank(s) with the appropriate word(s).

One possible explanation for the high frequency of bedtime struggles in Western homes is that children

A) are much more dependent than children from other cultures. B) are expected to sleep for more hours than children from other cultures. C) often eat late in the evening, which interferes with sleep. D) may feel stressed when they must fall asleep without assistance.