Memory & Maths Test (OSPAN)

This is an adaptation of the original automated operation span (OSPAN) test (Unsworth et al., 2005) to assess complex working memory span.

Participants are asked to memorize and recall sequences of 3 to 7 letters while solving simple mathematical operations. Letters are visually presented on the screen one by one and always preceded by a single operation. At the end of each letter sequence, the recall screen is presented.

An extensive 3-part practice session is implemented, to practice (1) the recall of short letter sequences only, (2) the solving of mathematical equations only, and (3) the combination of letters and operations as in the actual test. Based on the math-only practice an individual response time threshold for solving equations is calculated.

Our implementation, Memory & Maths, was developed for use in Janssen et al. (https://osf.io/ujrt8). It is free and open for anybody to use and adapt as they see fit.

Characteristics

• sequences of 3 to 7 letters
• 3 repetitions (trials) per sequence length, 15 trials in total
• one mathematical operation preceding each letter
• individual response time threshold for solving equations based on the math-only practice
• keyboard-guided recall
• including a 3-part practice session
• duration: 15-20 minutes
• language: English (German translation available upon request)

Limitations

• Instead of the original mouse-guided recall, we have implemented a keyboard-guided recall, which may affect performance depending on people's typing ability and speed.
• We have implemented only one spreadsheet with no randomization of trial order or letter sequences across participants.
• There is a study-specific reference to the "animal gamble task" in the instructions. Please make ensure to delete this before using this task.

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