Which of the following scales of measurement provides the greatest precision in measurement?

Hanne, a developmental psychology graduate student, has identified her question of scientific interest: "How do infants who breast-feed differ in their physical and social development from infants who bottle-feed?" To begin her research, what

is Hanne's next step? draw conclusions collect data choose a research method propose a hypothesis

In cases of visual search where targets are rarely present,:

a) visual search is especially accurate. b) visual search is surprisingly inaccurate. c) visual search is about the same as it is in cases where targets are occasionally or frequently present. d) visual search is unnecessary.