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Cognitive Task Library

30 smartphone-optimised tasks across 8 cognitive domains. Each task includes interactive previews, parameter guides, and evidence summaries.

30 tasks

Attention & Processing Speed30–90 secBurden: Low

Reaction Time

A brief tap-based task that measures basic response speed and alertness.

AttentionProcessing speed
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Attention & Processing Speed1–2 minBurden: Medium

Symbol-Digit Coding

A smartphone adaptation of code substitution that measures processing speed and visual matching.

Processing speedAttention
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Working Memory1–2 minBurden: Medium

1-Back

A brief sequential matching task for working memory updating and sustained attention.

Working memorySustained attention
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Executive Function1–2 minBurden: Low

Flanker

A brief inhibitory-control task that requires responding to a target while ignoring neighboring distractors.

Executive controlSelective attentionInhibitory control
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Executive Function1–3 minBurden: Medium

Trail-Making Analogue

A touch-based sequencing task for processing speed, visual search, and cognitive flexibility.

Processing speedVisual searchCognitive flexibility
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Executive Function1–2 minBurden: Low

Go/No-Go

A response inhibition task where participants respond to frequent targets and withhold responses to non-targets.

Inhibitory controlSustained attention
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Attention & Processing Speed30–90 secBurden: Low

Visual Odd-One-Out

A visual search task where participants tap the one item that differs from the others.

Visual searchSelective attentionProcessing speed
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Episodic & Verbal Memory2–4 minBurden: Medium

Paired-Associate Memory

An associative memory task where participants learn item pairs and later select the correct match.

Associative memoryEpisodic memory
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Episodic & Verbal Memory1–3 minBurden: Medium

Recognition Memory

A memory task in which participants identify previously seen items among new distractors.

Recognition memoryEpisodic memory
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Working Memory1–3 minBurden: Medium

Sequence Tapping / Spatial Span

A visuospatial working-memory task where participants reproduce a sequence of highlighted locations.

Visuospatial working memory
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Attention & Processing Speed30–90 secBurden: Low

Choice Reaction Time

A response-selection task where participants identify which stimulus appeared and tap the matching answer.

Decision speedAttention
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Executive Function2–4 minBurden: Medium

Task Switching

An executive-function task where participants alternate between different response rules across trials.

Cognitive flexibilityExecutive control
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Language1–2 minBurden: Medium

Semantic Verbal Fluency

A timed speech task where participants say as many items as possible from a given category.

LanguageSemantic retrievalExecutive search
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Episodic & Verbal Memory3–6 minBurden: High

List Learning

A verbal learning task where participants study a short word list and recall it over one or more trials.

Verbal learningEpisodic memory
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Working Memory1–2 minBurden: Low

Arithmetic Verification

A true-or-false arithmetic task that probes mental calculation and processing efficiency.

Mental manipulationProcessing efficiencyWorking memory
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Attention & Processing Speed1–3 minBurden: Medium

Cancellation Task

A visual scanning task where participants tap designated targets among distractors.

Selective attentionConcentrationVisual scanning
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Reasoning3–5 minBurden: High

Matrix Reasoning

A nonverbal reasoning task where participants complete a missing element in a visual pattern.

Fluid reasoningAbstract reasoning
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Working Memory3–5 minBurden: High

Rotation Span

A complex-span working-memory task combining a rotation judgment with spatial memory storage.

Working-memory capacityVisuospatial working memory
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Working Memory3–5 minBurden: High

Symmetry Span

A complex-span task combining symmetry judgments with spatial memory recall.

Working-memory capacityExecutive working memory
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Motor & Digital Markers20–60 secBurden: Low

Finger Tapping Variability

A repeated tapping task that captures digital motor timing features linked to cognitive and executive performance.

Motor timingDigital markersExecutive-motor integration
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Decision Making3–5 minBurden: Medium

Probabilistic Learning

A two-option reinforcement-learning task that measures how quickly participants track reward probabilities and update choices.

Reinforcement learningDecision makingReward sensitivity
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Decision Making2–4 minBurden: Low

Delay Discounting

An intertemporal-choice task that measures the degree to which participants prefer smaller immediate rewards over larger delayed ones.

ImpulsivityIntertemporal choiceSelf-control
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Decision Making2–4 minBurden: Low

Risky Choice

A lottery-decision task that measures risk preference by presenting guaranteed amounts against probabilistic prizes.

Risk preferenceDecision making under uncertaintyLoss aversion
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Executive Function3–6 minBurden: Medium

Category Learning

A feedback-based classification task that measures how participants induce and apply category rules from trial-by-trial feedback.

Rule learningCognitive flexibilityConcept formation
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Attention & Processing Speed1–3 minBurden: Low

RSVP Target Detection

A rapid serial visual presentation task in which participants detect a target letter embedded in a fast stream.

Sustained attentionProcessing speedTarget detection
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Reasoning1–3 minBurden: Low

Pattern Matching

A rapid visual-pattern completion task where participants identify the tile that continues a three-tile sequence.

Fluid reasoningVisual pattern recognitionInductive reasoning
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Reasoning1–3 minBurden: Low

Mental Rotation

A visuospatial task in which participants judge whether two rotated shapes are the same or mirror-image different.

Visuospatial processingMental imagerySpatial ability
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Working Memory2–4 minBurden: Medium

Change Detection

A visual working-memory capacity task in which participants detect whether a colour in a briefly shown array changed after a blank interval.

Visual working memoryAttentionCapacity
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Reasoning2–4 minBurden: Medium

Grid Navigation

A spatial planning task where participants navigate a player token to a target on a small grid using the fewest moves.

Spatial planningProblem solvingExecutive planning
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Executive Function2–3 minBurden: Medium

Dual-Task Tracking

A divided-attention task measuring performance costs when a motor tracking task and a cognitive classification task are done simultaneously.

Divided attentionDual-task performanceExecutive control
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