Short answer
Short-term memory usually refers to keeping a small amount of information available for a brief period. Working memory is often used more broadly for maintaining information while attention is also doing something with it — such as reordering, updating, comparing or calculating. The distinction is useful, but research does not support treating the two labels as perfectly separate mental boxes.
A simple example helps. Holding the digits 4-9-2 long enough to repeat them is mainly a temporary-storage demand. Repeating 4-9-2 backward as 2-9-4 adds manipulation and attentional control. Both tasks still share memory, attention, strategy and task-understanding demands.
Why the terms are easy to confuse
The scientific literature has not always used the terms consistently. Aben, Stapert and Blokland's review describes a common conceptual distinction: short-term memory emphasizes temporary maintenance, while working memory often includes maintenance plus manipulation. The same review also notes substantial overlap between measures and disagreement about how cleanly the constructs can be separated.
Baddeley's review presents an influential working-memory framework with attentional control and temporary verbal and visuospatial components. It is a theoretical model for explaining patterns in cognition, not a literal diagram that a browser task can scan or reveal inside one person.
What a digit-span task actually samples
A digit-span task presents a short sequence and asks you to reproduce it. Forward span mostly emphasizes temporary maintenance and ordered recall. Backward span adds a transformation: the sequence must be held and then reproduced in reverse order. That added step can increase attentional and manipulation demands, but it does not make backward span a pure measurement of one isolated ability.
A result can also move because of distraction, rehearsal strategy, familiarity with digit-span tasks, device conditions, fatigue or misunderstanding an instruction. This is why one observed span should be treated as a sample of performance under those conditions rather than a permanent capacity label.
How AurorIQ uses the distinction
The AurorIQ Working Memory Test reports your observed forward and backward spans separately and describes their difference. It does not convert those observations into a population percentile or a diagnosis. The task is useful for self-comparison and reflection precisely because the report keeps the measurement narrow.
If your backward span is lower than your forward span, the safe interpretation is not “your working memory is weak.” A more defensible reading is that the reverse-order task was harder for you in this session. Repeated testing can also change performance through familiarity, so large conclusions should not be based on a single retake.
Which concept matters in everyday life?
Both ideas can be useful. Temporary storage matters when you keep a phone number available long enough to type it. Working-memory demands become more obvious when you mentally update a subtotal, follow multi-step directions, compare two arguments or remember intermediate values while solving a problem.
Real tasks rarely isolate one laboratory construct. They combine knowledge, attention, motivation, sensory processing and strategy. That is also why “improving working memory” should not be treated as a promise that practicing one memory game will broadly improve intelligence or academic performance.
How to use a memory result responsibly
- Use the first result as a snapshot. Note the setting, distractions and whether the instructions felt clear.
- Compare like with like. If you retake, use similar conditions and remember that familiarity can improve scores.
- Look for practical friction. If long instructions are hard to hold, external notes and chunking may reduce unnecessary memory load.
- Do not self-diagnose. A short web task is not a clinical memory assessment.
For the broader concept, read Working memory, explained. For retesting, see Practice effects in cognitive tests.
References
- Aben, B., Stapert, S., & Blokland, A. (2012). About the Distinction between Working Memory and Short-Term Memory. Frontiers in Psychology, 3, 301.
- Baddeley, A. (2012). Working memory: theories, models, and controversies. Annual Review of Psychology, 63, 1–29.