Challenge your short-term memory with forward and backward digit span tasks.
Working memory — the ability to hold and manipulate information in mind — is one of the most important cognitive abilities. It underlies reading comprehension, mental math, following instructions, and complex decision-making. This test uses the classic digit span paradigm to measure your working memory capacity.
Digit span testing dates back to Joseph Jacobs in 1887, making it one of the oldest cognitive tests in psychology. It became a core component of the Wechsler intelligence scales and remains a standard neuropsychological measure today. George Miller's landmark 1956 paper 'The Magical Number Seven, Plus or Minus Two' established that average working memory capacity holds about 7 items. Alan Baddeley's working memory model (1974) further refined our understanding, distinguishing between the phonological loop, visuospatial sketchpad, and central executive.
Numbers are displayed one at a time. Pay close attention and remember the order.
First three tasks: repeat the numbers in the SAME order they appeared.
Last two tasks: repeat the numbers in REVERSE order — a harder cognitive challenge.
Sequences get longer as you advance, pushing the limits of your working memory.
Your forward digit span — basic short-term memory capacity
Your backward digit span — working memory manipulation ability
How your working memory compares to population norms
The difference between your storage and processing capacities
Strategies for improving working memory in daily life
Working memory capacity is strongly correlated with fluid intelligence (r ≈ 0.72). Neuroimaging shows forward span primarily activates the phonological loop (left inferior frontal gyrus), while backward span additionally engages the dorsolateral prefrontal cortex for executive manipulation. Average forward span is 7±2 digits; backward span is typically 2 fewer.
Take the Working Memory & Sequencing Test now and receive your personalized report with actionable insights.
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