“…When administered under power or slightly speeded conditions, items on some tests tended to be somewhat easier when they appeared near the beginning of a test than when they appeared near the end of a test (Fiaugher, Melton, & Myers, 1968;Mollenkopf, 1950). Rearrangements of the items in other tests produced little change in item difficulties under slightly speeded or power conditions (Flaugher et al, 1968;Gerow, 1980;Huck & Bowers, 1972;Moilenkopf, 1950;Monk & Stallings, 1970). While item-test biserials were not systematically affected by position under power conditions (Flaugher et al, 1968;Mollenkopf, 1950), under speeded conditions biserials were higher when an item appeared near the end of a test than when it came near the beginning (Mollenkopf, 1950).…”