Anne Fleur Kortekaas-Rijlaarsdam

CHAPTER 2 48 Supplementary material Table E2.2 Overview of included tasks and outcome measures Area of interest (Outcome, mediator, moderator) Task (abbreviation: reference) Reported measures Outcome measures (included in meta-analysis) Math (Outcome) Permanent Product Measure of Performance (PERMP: Swanson et al., 2000) 1. Number of items attempted 2. Number of items completed correctly 3. Total number of items 1. Math productivity, calculated as items attempted divided by total number of items 2. Math accuracy, calculated as items completed correctly divided by items attempted Speeded Arithmetic Test (SAT: De Vos, 1992) 1. Number of items attempted 2. Number of items completed correctly 3. Total number of items 1. Math productivity, calculated as items attempted divided by total number of items 2. Math accuracy, calculated as items completed correctly divided by items attempted Restricted Academic Situation Math sheet (RAS: e.g. developed by Douglas, Barr, O’Neill, & Britton, 1986) 1. Number of items attempted 2. Number of items completed correctly 1. Math accuracy, calculated as items completed correctly divided by items attempted Mad Minute (Addison-Wesley, 1981) 1. Math accuracy 1. Math accuracy Barnell Loft Math (Bonig, 1978) 1. Math accuracy 1. Math accuracy Independent math sheets developed by the investigators 1. Number of items attempted 2. Number of items completed correctly 3. Total number of items 1. Math productivity, calculated as items attempted divided by total number of items 2. Math accuracy, calculated as items completed correctly divided by items attempted Reading (Outcome) Barnell Loft Specific Skills Series (Bonig, 1978) 1. Reading accuracy 2. Reading number attempted 1. Reading accuracy 2. Reading number attempted Spelling (Outcome) Lists of grade-appropriate words assigned by the teacher or taken from local school district lists 1. Spelling accuracy 1. Spelling accuracy Teacher-rated ADHD symptoms (mediator) Swanson, Kotkin, Agler, M-Flynn, and Pelham (SKAMP) rating scale (Wigal et al., 1998) 1. ADHD Total Symptoms (including both Inattentive and Hyperactive/Impulsive scales): raw scores and SDs 1. Standardized score calculated as the difference between MPH and placebo conditions on the Total ADHD outcome scale, divided by the SD of the placebo condition. Strengths and Weakness of ADHD-symptoms and Normal Behavior (SWAN) rating scale (Hay et al., 2007; James Swanson et al., 1994) 1. ADHD Total Symptoms (including both Inattentive and Hyperactive/Impulsive scales): raw scores and SDs 1. Standardized score calculated as the difference between MPH and placebo conditions on the Total ADHD outcome scale, divided by the SD of the placebo condition. Revised Teacher Rating Scale Abbreviated (Goyette, Conners, & Ulrich, 1978) 1. ADHD Total Symptoms (including both Inattentive and Hyperactive/Impulsive scales): raw scores and SDs 1. Standardized score calculated as the difference between MPH and placebo conditions on the Total ADHD outcome scale, divided by the SD of the placebo condition.