The commentaries in this special issue as well as the articles they address contribute to the knowledge base about advanced learners, how they are identified, and how they are best served. In our Editors' commentary, we have organized our thoughts following the same order in which the commentaries appear in the remainder of this issue. As the…

Notes that program evaluations have many dimensions and that systematic efforts to evaluate an enrichment or intervention program require much decision making. Discusses factors affecting choice of evaluation measure, focuses for evaluation measures, factors affecting data collection (including family variables, screening versus psychometric…

The value of screening evaluations is assessed. Descriptions of screening programs for acquired immune deficiency syndrome and massive drug testing are presented. An example is provided of how productive evaluation work can guide a program even before the decision is made to implement it. (TJH)

Notes that articulating existence and cause of referral biases is critical to more effective preschool services. Maintains that until high child poverty, exposure to violence, and shortage of safe and stimulating environments are addressed, escalating rates of serious child emotional/behavioral problems will continue. Asserts that we must question…

Contends that implications of Fantuzzo et al's study go beyond Head Start and pertains to other programs serving infants, toddlers, and preschoolers. Suggests that when considering policy implications of the study, two issues should not be ignored: (1) the child within the context of a broader society; and (2) the importance of collaboration in…

This set of effectiveness indicators is intended to assist Colorado communities and agencies to evaluate themselves regarding processes for the identification of young children (birth to age 5) with disabilities. First, a statement of values stresses proactivity, family empowerment, and outcome orientation. Specific effectiveness indicators are…