Context effects are defined as being influences on test performance associated with the content of successively presented test items or sections. Four types of context effects are identified: (1) direct context effects (practice effects) which occur when performance on items is affected by the examinee having been exposed to similar types of…

The conflict between immediacy and accuracy in data-gathering and analysis is discussed. The case of the Postsecondary Transcript Sample (PETS) of the National Longitudinal Study is used to illustrate the particulars of this conflict and their resolution on the side of accuracy. (Author/MLW)