For the Wave I testing, because of the large number of PROMIS items, a complex sampling approach was used where participants were randomly assigned to either respond to two full-item banks or to multiple 7-item blocks of items.
After reading a general overview of the task, each participant completed two blocks of items.
With regard to this block test design, the item pool was divided randomly into ten blocks and each participant received two blocks of items.
The assignment of the two tasks to blocks of items was counterbalanced within participants across runs.
Data were acquired in two different runs, each with 32 blocks of items.
A third, vertical block of items contains the item responses for both diagnoses together, thus providing linkage in the dataset.
Items were arranged in blocks of 25 items, resulting in 4 blocks per condition.
The stimuli were presented in blocks of six items, with blocks being administered in an ABBA design.
Order in block: the presentation order of the trial in a block of 500 items.
A block or set of items is referred to as a module (Luecht and Nungester 1998).
