Initially infants are only able to bat at objects; they then learn to grasp them utilizing their whole hand. Later, infants are able to pick up small objects with just their index finger and thumb. This illustrates the ___________ principle

What common problem exists in each of the experiment briefs, which are included in

this chapter? A) small sample sizes were used in each of the briefs B) high rates of subject attrition are found in each brief C) flaw in the conclusions arrived at based on methods used D) all lacked sufficient analyses of the data collected

When we use the notation "f(N)" we are denoting

a. some function of the sample size. b. a fraction of N. c. the number of observations in the full sample. d. the symbol for power.