ADHD DIGIT SPAN VERIFICATION
ADHD DIGIT SPAN TRIAL
ADHD DIGIT SPAN SERIES

The second stage of validation requires demonstration that the level and change in level of the chosen mechanistic target can be Measured with the proposed measure (assay). This evidence may include references for the proposed measure, or theoretical support for the construct that the proposed measure is intended to assess. The first stage of validation requires a measure to be Identified within the field there must be theoretical support for the specific measure of the proposed mechanistic target or potential mechanism of behavior change. The SOBC Validation Process includes three important stages of evaluation for each proposed measure: Identification, Measurement, and Influence. Within the SOBC Measures Repository, researchers have access to measures of mechanistic targets that have been (or are in the processing of being) validated by SOBC Research Network Members and other experts in the field.

ADHD DIGIT SPAN VERIFICATION

The experimental medicine approach involves: identifying an intervention target, developing measures to permit verification of the target, engaging the target through experimentation or intervention, and testing the degree to which target engagement produces the desired behavior change. The SOBC program aims to implement a mechanisms-focused, experimental medicine approach to behavior change research and to develop the tools required to implement such an approach. By integrating work across disciplines, this effort will lead to an improved understanding of the underlying principles of behavior change. The Science of Behavior Change (SOBC) program seeks to promote basic research on the initiation, personalization and maintenance of behavior change. (For proprietary reasons we are unable to upload the Digit Span Backwards scale.) The total raw score for backwards digit span is the sum of the item scores maximum backwards digit span total raw score is 16 points.

The item score is the sum of the scores on the two trials for that item (range=0-2). For each trial, 1 point is scored for a correct response or 0 points for an incorrect response or no response.

ADHD DIGIT SPAN TRIAL

Both trials of each item are administered, even if the child gets Trial 1 correct. On each question the child repeats the numbers in reverse order of that presented aloud by the examiner (e.g., If the examiner says '5-6', the correct response would be “6-5” If the examiner says '5–1–7–4–2–3–8', the correct response would be '8-3-2-4-7-1-5'). For the purposes of our study, we used backwards only for a total of two trials of eight questions, or 16 total questions. The task consists of two items, forwards and backwards, and each item is composed of two trials of eight questions each. It assesses children’s ability to hold information in short-term memory and manipulate that information to produce some result. Outcome measures include the direction of the task (forwards or backwards), the longest sequence successfully reached and passed, and the total number of attempts.The Digit Span Task (Backwards-Only Child Version) measures working memory. The participant's span is the longest number of sequential digits that can accurately be remembered. Scores are total span reached for forward and reverse digits and number of errors. The task terminates when participants responded incorrectly on three occasions at a span length. The participant will hear a sequence of digits and then immediately be prompted to verbally repeat the sequence, either as it was heard (forwards), or in reverse order (backwards). If the participant responds correctly, the next trial presents a longer sequence.

ADHD DIGIT SPAN SERIES

Participants are presented with a random series of digits, and are asked to repeat them in either the order presented (forward span) or in reverse order (backwards span). While superficially very similar tasks, forward and backwards span rely on somewhat separable cognitive capacities: the simpler forward span task requires verbal working memory and attention, while the backwards span task additionally tests cognitive control and executive function.

Digit Span (DGS) is a measure of verbal short term and working memory that can be used in two formats, Forward Digit Span and Reverse Digit Span. This is a verbal task, with stimuli presented auditorily, and responses spoken by the participant and scored automatically by the software.

Adhd digit span