A child with both happy and angry responses to the mother shows which attachment style?

Jan's mother calls him "high strung" because he is disturbed by even the slightest noise, very hard to distract, and extremely fussy. The New York Longitudinal Study would call him

slow-to-warm up. difficult. hard to classify. an extrovert.

Intent-to-treat data analyses is designed

a) To preserve the random composition of groups b) To keep the investigator from changing the hypotheses that will be studied c) To evaluate the results with those who completed the pre, treatment, and post d) Estimates data that the subject would have had from others in the same treatment condition but who completed treatment