Motor performance and speeded response tasks

Movement itself is the object: timing, sequencing, adaptation or speed of a well-specified response; tapping rate, error, completion time and dual-task cost are the measures.

This family contains 5 tasks and cross-lists 2 more.

Digit Symbol Substitution

Timed paper-and-pencil or computerized task: substitute digits for symbols (or vice versa) using a visible key; items completed in a fixed interval index processing speed. Engages 5 processesResponse executionSelective attentionAssociative learningWorking memoryVisual perception. 6 aliasesDigit Symbol Substitution TestDSSTSDMTSymbol Digit ModalitiesCoding TestDigit Symbol Substitution, 5 variationsDSST (Digit-to-Symbol; WAIS)SDMT (Symbol-to-Digit; Smith)Oral SDMTComputerized DSST/SDMTPaired-Associate Variant.

Finger Tapping

Repetitive single-finger or sequence tapping at fastest or paced rates; taps-per-interval and tap-timing variability index motor speed and rhythm control. Engages 4 processesFine motor controlMotor timingResponse executionMotor preparation. 3 aliasesFTTTapping TaskFinger Tapping, 7 variationsSelf-Paced TappingAuditorily-Paced TappingVisually-Paced TappingUnimanual vs. BimanualSequential Multi-FingerComplex Rhythmic PatternsContinuation Paradigm.

Mirror Tracing

Tracing of a figure viewed only in a mirror; error and completion time across trials index visuomotor adaptation and procedural learning. Engages 5 processesVisuomotor adaptationFine motor controlProcedural memoryError detectionMotor planning. 3 aliasesMTTMirror DrawingMirror Tracing, 8 variationsStar Tracing (Standard)Circle/Diamond/Complex ShapesComputerized Mirror TracingLeft-Right vs. Up-Down ReversalRotation (Non-Mirror) VariantsPrism Adaptation AnalogDual-Hand Mirror TracingMirror Tracing with Delay.

Motor Sequence Learning

Repeated execution of a fixed finger sequence; within- and across-session speed and accuracy changes index motor skill learning. Engages 5 processesMotor sequence learningProcedural memoryMotor planningFine motor controlConsolidation. 2 aliasesSequence LearningFinger Sequence Task, 8 variationsDiscrete Sequence Production (DSP)Serial Reaction Time Task variantFinger Opposition TaskBimanual CoordinationExplicit vs. Implicit Sequence LearningSequence Complexity ManipulationTransfer TestsContinuous Tracking + Sequence.

Psychological Refractory Period

Two tasks presented with a short SOA; RT for the second task lengthens as SOA shortens, indexing a central response-selection bottleneck. Engages 4 processesDivided attentionResponse selectionResponse executionMotor preparation. 2 aliasesPRPPsychological Refractory Period, 6 variationsStandard Auditory-Visual PRPVisual-Visual PRPVariable SOA DesignPRP with PracticePRP with Ideomotor-Compatible TasksTriple-Task PRP.

Also filed here

These tasks are filed under another family and cross-listed here; the note says why.

Task	Filed under	Note
Serial Reaction Time	Conditioning, reinforcement and implicit learning tasks	Implicit sequence learning through key presses; could be filed under motor performance
Trail Making	Rule use, planning and reasoning tasks	Part B alternates sequences; Part A is a speeded motor task

Marked for review

A review mark means the assignment is a judgement call the curator has flagged for a second opinion. On the family an entry is filed under it means “not sure this is the right home”; on a cross-listing it means “not sure this belongs here at all”. The note names the alternative or the doubt. Comments go to the issue tracker.

Task	Membership	Note
Digit Symbol Substitution	filed here	Speeded symbol coding; processing speed rather than motor control is the usual reading
Psychological Refractory Period	filed here	Dual-task response-selection bottleneck; no dual-task family exists yet
Serial Reaction Time	cross-listed	Implicit sequence learning through key presses; could be filed under motor performance
Trail Making	cross-listed	Part B alternates sequences; Part A is a speeded motor task