“…There have been reports of absence of, or very weak, MSS effects (Diener, 1988(Diener, , 1990Stadler & Logan, 1989;Swanson, 1974), or linear, or logarithmic (bilinear, or quadratic, used interchangeably in this article) RT functions in Sternberg-type tasks across different studies or within the same studies depending on the materials or methods used. The suggested potential causes and the theoretical implications of these findings were numerous and varied and were lacking a consensus across the studies (Atkinson & Juola, 1973;Burrows & Okada, 1975;Corballis, Katz, & Schwartz, 1980;Juola, Taylor, & Young, 1974;Okada & Burrows, 1978;Simpson, 1972). The present study identified some methodological variables that reliably produced each of the above three types of MSS effects-that is, the linear, the null (or very weak), and the logarithmic (quadratic) RT functions.…”