Key points are not available for this paper at this time.
Patricia H. Miller, Vernon F. Haynes, Darlene DeMarie-Dreblow, Janet Woody-Ramsey, Children's Strategies for Gathering Information in Three Tasks, Child Development, Vol. 57, No. 6 (Dec., 1986), pp. 1429-1439
Miller et al. (Mon,) studied this question.