___________________________________________________________________________________________________________________ Immediate & Delayed Memory Task (IMT/DMT) - Complete Session (Practice + Test) ___________________________________________________________________________________________________________________ Script Author: David Nitz (dave@millisecond.com) for Millisecond Software, LLC last updated: 01-19-2023 by K. Borchert (katjab@millisecond.com) for Millisecond Software, LLC Script Copyright © 01-19-2023 Millisecond Software ___________________________________________________________________________________________________________________ BACKGROUND INFO ___________________________________________________________________________________________________________________ This script implements a practice + testing session for the Immediate & Delayed Memory Task (IMT/DMT) described in: Dougherty, D.M., Marsh, D.M., and Mathias, C.W. (2002). Immediate and Delayed Memory Tasks: A computerized measure of memory, attention, and impulsivity. Behavior Research Methods, Instruments, and Computers, 34, 391-398. The IMT/DMT was developed to support the systematic study of sustained attention, working memory, and impulsivity in higher functioning populations. It provides an alternative to the Continuous Performance Test (CPT). ___________________________________________________________________________________________________________________ TASK DESCRIPTION ___________________________________________________________________________________________________________________ Participants view a steady stream of 5-digit (default) numbers and are asked to click the Mouse button if the current target number is identical to the one before it. 2 slightly different conditions: A) Delayed: the target numbers are followed by three distractor numbers. The distractor numbers are always the same number (12345). B) Immediate: target numbers follow target numbers immediately. No distractors are used. This batch script runs (1) IMTDMT_practice.iqx (instructions + practice) (2) IMTDMT_test.iqx (test session) ___________________________________________________________________________________________________________________ DURATION ___________________________________________________________________________________________________________________ the default set-up of the script takes appr. 30 minutes to complete