Section 337 of 440

Complete canonical tutorial. This reader section contains the same teaching body as PWR-155 · Hand–eye coordination. Open the Power dossier.

PWR-155 · SELF GUIDED full tutorial

Reach to visible targets accurately before adding speed or movement

This lesson teaches a stationary reach-and-place task with safe objects. You will fix the geometry, look at the target, guide a controlled reach, pause before release, classify endpoint error and vary one target position. Accuracy comes before speed.

What you will produceThe learner places twelve soft objects on six stationary targets with at least ten target contacts and no unsafe reach or drop.

Method8 numbered Power-specific steps

Practice authoritySelf-guided low-risk method

Start step by step Open research dossier

1 · Permission and limits

Know exactly what you may do

You may

Use soft objects and six stationary targets within a comfortable, seated or otherwise stable reach.
Fix target geometry, confirm readiness before each placement, record contacts and drops, and move only one target for the transfer trial.
Report target contacts and safe reaches for this geometry only, without claiming sport, driving or rehabilitation transfer.

Qualified help is required for

Suspected visual, neurological or motor change requires clinical assessment; driving, sport and procedural training require their authorised instructors.
Target contact is sensitive to contrast, seating and familiar geometry, so this score cannot be treated as a general visual-motor or reaction measure. No wider hand–eye coordination claim follows.

Never do this from the page alone

Practise with knives, glass, thrown hard objects, moving vehicles or targets near other people.
Reach beyond stable balance or sacrifice accuracy for reaction speed.
Use results to diagnose vision or neurological function.

2 · Get ready

Gather what you need and check the starting conditions

What you need

a stationary target-placement task with safe objects.
A non-slip target mat, soft beanbags or foam blocks, stable seat and optional forearm support.
A path/endpoint sheet for target hit, edge, miss, correction, drop and movement time.

Before you start

Prepare six high-contrast stationary targets and twelve soft palm-sized objects on a stable tabletop
Before the first hand–eye coordination attempt, write the exact result you will score: Visual detection, movement path, endpoint error and product result.
Place all targets inside comfortable reach and remove breakable, sharp or hot objects.
Use ordinary vision correction and lighting; unexplained new visual change requires clinical review, not practice.

3 · The method

Follow these steps in order

Fix the geometry
Mark the seat, object start point and six target positions. Confirm each target can be touched while balance stays supported.
Why: Consistent distance makes endpoint errors comparable.
Check: The learner reaches every target without trunk lunge or loss of support.
Look at the endpoint
Before lifting the object, identify the target centre and keep visual attention there during the final half of the reach.
Why: A declared visual endpoint guides the movement path.
Check: The gaze or chosen visual access stays on the target through placement.
Lift with a secure light hold
Pick up one soft object using enough grip to prevent slipping, without crushing or hiding the target.
Why: A stable object and visible target reduce avoidable correction.
Check: The object remains secure and the target stays visible.
Reach on a smooth path
Move at a pace that permits stopping. Keep the object above the clear table and avoid a last-second sideways sweep.
Why: Smooth, controllable travel limits overshoot and collision.
Check: The path has no abrupt acceleration, table strike or balance change.
Pause then release
Pause directly over or on the centre for one count, then open the hand or release the aid without pushing.
Why: A brief pause separates endpoint control from release momentum.
Check: The object stays at the endpoint after release.
Label endpoint error
Mark centre, edge or miss and add left, right, near or far. Keep the first result even if corrected afterward.
Why: Directional errors guide the next reach more usefully than a hit total alone.
Check: Every reach has one zone and direction label where needed.
Correct one variable
For a repeated miss direction, adjust only the start position, visual contrast, support or approach angle and make three matched reaches.
Why: One-variable change identifies whether the correction helps.
Check: The next three endpoints move toward centre without greater effort.
Move one target only
After ten accurate placements, move one target five centimetres while keeping the object, seat and rule constant. Make two reaches.
Why: A small geometry change tests near transfer without adding speed or moving targets.
Check: The changed target is recorded separately and reached with stable support.

4 · Worked example

See the whole method used once

Scenario

A seated learner places twelve foam cubes onto six 8 cm coloured circles, two placements per circle.

Walkthrough

They tape the chair and mat positions and confirm all targets are inside supported reach.
The first six placements all contact their targets, but two land at the far edge of the most distant circle.
They keep the target in view, pause above centre and label each endpoint before correction.
Because both errors are far, they move the start point—not the target—two centimetres closer for three matched reaches.
All three matched reaches land centre, and one more unchanged placement brings the contact count to ten. They then move one target five centimetres left; the final two placements both contact it with stable support.

Result

All twelve placements contact a target, centre accuracy improves after one declared start-point change and the final two reaches remain stable after the one-target transfer. This is not a moving-object or reaction-time result.

5 · Right and wrong

Compare correct or safer execution with the common wrong version

Right and wrong comparison
Moment	Right / safer	Wrong / riskier	Why it matters
Fix the geometry	Mark the seat, object start point and six target positions. Confirm each target can be touched while balance stays supported.	Change seat and target distance between every attempt.	Consistent distance makes endpoint errors comparable.
Look at the endpoint	Before lifting the object, identify the target centre and keep visual attention there during the final half of the reach.	Watch the hand only and lose the endpoint during release.	A declared visual endpoint guides the movement path.
Lift with a secure light hold	Pick up one soft object using enough grip to prevent slipping, without crushing or hiding the target.	Squeeze a bulky object until it blocks the target.	A stable object and visible target reduce avoidable correction.
Reach on a smooth path	Move at a pace that permits stopping. Keep the object above the clear table and avoid a last-second sideways sweep.	Swing quickly and rely on a last-second correction.	Smooth, controllable travel limits overshoot and collision.
Pause then release	Pause directly over or on the centre for one count, then open the hand or release the aid without pushing.	Push the object across the target instead of controlling release.	A brief pause separates endpoint control from release momentum.

6 · Common mistakes

Spot the error and apply the correction

Common mistakes and corrections
Mistake	Fix
Change seat and target distance between every attempt.	Mark the seat, object start point and six target positions. Confirm each target can be touched while balance stays supported.
Watch the hand only and lose the endpoint during release.	Before lifting the object, identify the target centre and keep visual attention there during the final half of the reach.
Squeeze a bulky object until it blocks the target.	Pick up one soft object using enough grip to prevent slipping, without crushing or hiding the target.
Swing quickly and rely on a last-second correction.	Move at a pace that permits stopping. Keep the object above the clear table and avoid a last-second sideways sweep.
Push the object across the target instead of controlling release.	Pause directly over or on the centre for one count, then open the hand or release the aid without pushing.

7 · Practice

Turn the steps into a usable skill

First session

Arrange six high-contrast stationary targets at known tabletop coordinates & place twelve soft palm-sized objects inside an easy reach zone. Confirm seating, visual access & a no-lunge boundary; target contact, table contact, drop & unsafe reach receive separate marks.
For each object, look at or access endpoint before lifting. Use a secure light hold & keep target visible through a smooth reach; hand pauses over endpoint before release rather than throwing or sliding object.
Place six objects, one to each target & label endpoint error as short, long, left or right. Do not immediately move a target or change object size, because first pattern must show whether geometry or path correction is needed.
Choose dominant endpoint error & alter only reach amplitude or path direction. Complete a second six-object pass while keeping start positions, gaze strategy & targets fixed; table strikes & abrupt acceleration remain errors even if contact occurs.
After rest, move one target by a small declared distance & make two placements to it. This tests recalibration of eye–hand geometry; it does not justify faster movement, farther reach or a smaller object.
Close by comparing ten-or-more target contacts, drops, path quality & posture. Save tabletop map with score so a later trial can reproduce same geometry instead of relying on memory.

Repeat plan

Use two later sessions with same soft objects & six-target map. First repeat original coordinates; later move one target only. Add distance or a second moved target after two twelve-object trials have at least ten contacts, no drops & no unsafe reach or table strike.

Progress when

Learner places twelve soft objects on six stationary targets with at least ten target contacts & no unsafe reach or drop.
Object remains secure & target stays visible.
Every reach has one zone & direction label where needed.
Changed target is recorded separately & reached with stable support.

Do not progress when

Do not extend reach while trunk lunge, loss of support, table strike or abrupt path correction remains.
Pause for visual discomfort, dizziness, pain, numbness, unsafe fatigue or inability to keep endpoint accessible.
Return to fixed map when moving a target causes repeated short, long, left or right errors.

8 · Check the result

Measure what changed

Visual detection, movement path, endpoint error and product result

How: For Hand–eye coordination, measure Visual detection, movement path, endpoint error and product result. Keep the hand–eye coordination fixture stable. Target: The learner places twelve soft objects on six stationary targets with at least ten target contacts and no unsafe reach or drop. Log hand–eye coordination errors, prompts, burden and stops.

Good result: Object remains secure & target stays visible. Every reach has one zone & direction label where needed. Changed target is recorded separately & reached with stable support.

This does not prove: Target contact is sensitive to contrast, seating and familiar geometry, so this score cannot be treated as a general visual-motor or reaction measure.

Self-check

Starting check — The learner reaches every target without trunk lunge or loss of support.
Can you show this before continuing? The gaze or chosen visual access stays on the target through placement.
If you catch this mistake — Change seat and target distance between every attempt. — use this correction: Mark the seat, object start point and six target positions. Confirm each target can be touched while balance stays supported.
What this result does not prove: Target contact is sensitive to contrast, seating and familiar geometry, so this score cannot be treated as a general visual-motor or reaction measure.

9 · Stop, adapt or get help

Keep the safety boundary practical

Stop and get help

Stop for dizziness, new double vision, sudden visual change, headache, weakness, numbness, pain or loss of balance; urgent new neurological symptoms need emergency assessment.
Do not extend reach while trunk lunge, loss of support, table strike or abrupt path correction remains.
Pause for visual discomfort, dizziness, pain, numbness, unsafe fatigue or inability to keep endpoint accessible.
Return to fixed map when moving a target causes repeated short, long, left or right errors.

Accessibility and adaptations

Keep usual aids for Hand–eye coordination; record each support inside the hand–eye coordination setup.
Accessible opening check for Hand–eye coordination: The learner reaches every target without trunk lunge or loss of support.
Use larger or higher-contrast targets, tactile borders, auditory target cues, arm support, alternate hand, eye-gaze selection or a reach aid while documenting the configuration.

10 · Evidence and limits

Why these instructions are here

primary research
An active-controlled older-adult trial did not show significant between-group improvement on primary eye–hand outcomes, so claims should remain task-specific.
Effect of interactive cognitive-motor training on eye-hand coordination and cognitive function in older adults
official guidance
Official repetitive-task guidance supports monitoring reach, repetition, posture, force and recovery rather than speed alone.
Assessment of repetitive tasks of the upper limbs (the ART tool)

Limits

A double-blind active-controlled trial found no significant between-group improvement on primary eye–hand outcomes.
Stationary tabletop placement does not establish ball skills, driving, surgery, reaction time or visual health.
Target contact is sensitive to contrast, seating and familiar geometry, so this score cannot be treated as a general visual-motor or reaction measure.

Open the complete canonical research register

Primary empirical supportLimiting / contrary
Variable practice is superior to self-directed training for laparoscopic simulator training: a randomized trial
A Vamadevan; L Konge; F Bjerrum · 2024 · Primary research
Primary empirical supportLimiting / contrary
Training with cognitive load improves performance under similar conditions in a real surgical task
G Sankaranarayanan; C A Odlozil; K O Wells; S G Leeds; S Chauhan; J W Fleshman; D B Jones; S De · 2020 · Primary research
Primary empirical supportLimiting / contrary
Lack of transfer of skills after virtual reality simulator training with haptic feedback
C Våpenstad; E F Hofstad; L E Bø; E Kuhry; G Johnsen; R Mårvik; T Langø; T N Hernes · 2017 · Primary research
Primary empirical supportLimiting / contrary
Promoting Successful Cognitive Aging Through Observational Drawing: A Feasibility Study
M M Vodyanyk; S M Jaeggi · 2025 · Primary research
Primary empirical supportLimiting / contrary
Effect of interactive cognitive-motor training on eye-hand coordination and cognitive function in older adults
P T Chan; W C Chang; H L Chiu; C C Kao; D Liu; H Chu; K R Chou · 2019 · Primary research
Limiting / contraryOfficial boundary context
Assessment of repetitive tasks of the upper limbs (the ART tool)
UK Health and Safety Executive · 2010 · Official guidance

Read the complete evidence interpretation on the Power dossier.

Tutorial delivery controls

Learn, adapt, troubleshoot and resume

Estimated timeEstimated 29 min reading and worksheet pass

DifficultyIntermediate

EquipmentCommon household or practice equipment

SpaceRoom-scale practice space

Method qualityComprehensive10 of 10 structural checks present. Automated method-readiness band; human editorial sign-off is separate.

Evidence contextG1; Deep research depthScientific support is evaluated separately from teaching-method structure.

Editorial reviewPending manual sign-offNo human approval is claimed until reviewer, date and content hash are recorded.

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Step-by-step learner mode

Each activity includes its success check, a nearby accessible alternative and an “I’m stuck” correction path. Alternatives preserve the target where possible; when they change the task, Titan labels them as related rather than equivalent.

Fix the geometry

Mark the seat, object start point and six target positions. Confirm each target can be touched while balance stays supported.

Why this step exists

Consistent distance makes endpoint errors comparable.

Success check

The learner reaches every target without trunk lunge or loss of support.

I’m stuck on this step

Reset: Re-read this authored instruction — “Mark the seat, object start point and six target positions. Confirm each target can be touched while balance stays supported.” — and its success check, then attempt only this step.

Possible snag: Change seat and target distance between every attempt.
Correction: Mark the seat, object start point and six target positions. Confirm each target can be touched while balance stays supported.

Stop / get help: Stop for dizziness, new double vision, sudden visual change, headache, weakness, numbness, pain or loss of balance; urgent new neurological symptoms need emergency assessment.

Mark step 1 complete

Look at the endpoint

Before lifting the object, identify the target centre and keep visual attention there during the final half of the reach.

Why this step exists

A declared visual endpoint guides the movement path.

Success check

The gaze or chosen visual access stays on the target through placement.

I’m stuck on this step

Reset: Re-read this authored instruction — “Before lifting the object, identify the target centre and keep visual attention there during the final half of the reach.” — and its success check, then attempt only this step.

Possible snag: Watch the hand only and lose the endpoint during release.
Correction: Before lifting the object, identify the target centre and keep visual attention there during the final half of the reach.

Stop / get help: Stop for dizziness, new double vision, sudden visual change, headache, weakness, numbness, pain or loss of balance; urgent new neurological symptoms need emergency assessment.

Mark step 2 complete

Lift with a secure light hold

Pick up one soft object using enough grip to prevent slipping, without crushing or hiding the target.

Why this step exists

A stable object and visible target reduce avoidable correction.

Success check

The object remains secure and the target stays visible.

I’m stuck on this step

Reset: Re-read this authored instruction — “Pick up one soft object using enough grip to prevent slipping, without crushing or hiding the target.” — and its success check, then attempt only this step.

Possible snag: Squeeze a bulky object until it blocks the target.
Correction: Pick up one soft object using enough grip to prevent slipping, without crushing or hiding the target.

Stop / get help: Stop for dizziness, new double vision, sudden visual change, headache, weakness, numbness, pain or loss of balance; urgent new neurological symptoms need emergency assessment.

Mark step 3 complete

Reach on a smooth path

Move at a pace that permits stopping. Keep the object above the clear table and avoid a last-second sideways sweep.

Why this step exists

Smooth, controllable travel limits overshoot and collision.

Success check

The path has no abrupt acceleration, table strike or balance change.

I’m stuck on this step

Reset: Re-read this authored instruction — “Move at a pace that permits stopping. Keep the object above the clear table and avoid a last-second sideways sweep.” — and its success check, then attempt only this step.

Possible snag: Swing quickly and rely on a last-second correction.
Correction: Move at a pace that permits stopping. Keep the object above the clear table and avoid a last-second sideways sweep.

Stop / get help: Stop for dizziness, new double vision, sudden visual change, headache, weakness, numbness, pain or loss of balance; urgent new neurological symptoms need emergency assessment.

Mark step 4 complete

Pause then release

Pause directly over or on the centre for one count, then open the hand or release the aid without pushing.

Why this step exists

A brief pause separates endpoint control from release momentum.

Success check

The object stays at the endpoint after release.

I’m stuck on this step

Reset: Re-read this authored instruction — “Pause directly over or on the centre for one count, then open the hand or release the aid without pushing.” — and its success check, then attempt only this step.

Possible snag: Push the object across the target instead of controlling release.
Correction: Pause directly over or on the centre for one count, then open the hand or release the aid without pushing.

Stop / get help: Stop for dizziness, new double vision, sudden visual change, headache, weakness, numbness, pain or loss of balance; urgent new neurological symptoms need emergency assessment.

Mark step 5 complete

Label endpoint error

Mark centre, edge or miss and add left, right, near or far. Keep the first result even if corrected afterward.

Why this step exists

Directional errors guide the next reach more usefully than a hit total alone.

Success check

Every reach has one zone and direction label where needed.

I’m stuck on this step

Reset: Re-read this authored instruction — “Mark centre, edge or miss and add left, right, near or far. Keep the first result even if corrected afterward.” — and its success check, then attempt only this step.

Possible snag: The result from “Mark centre, edge or miss and add left, right, near or far. Keep the first result even if corrected afterward.” does not yet meet this declared check: Every reach has one zone and direction label where needed.
Correction: Return to the start of “Label endpoint error”, reduce complexity or pace, and repeat only the part needed to satisfy: “Every reach has one zone and direction label where needed.”

Stop / get help: Stop for dizziness, new double vision, sudden visual change, headache, weakness, numbness, pain or loss of balance; urgent new neurological symptoms need emergency assessment.

Mark step 6 complete

Correct one variable

For a repeated miss direction, adjust only the start position, visual contrast, support or approach angle and make three matched reaches.

Why this step exists

One-variable change identifies whether the correction helps.

Success check

The next three endpoints move toward centre without greater effort.

I’m stuck on this step

Reset: Re-read this authored instruction — “For a repeated miss direction, adjust only the start position, visual contrast, support or approach angle and make three matched reaches.” — and its success check, then attempt only this step.

Possible snag: The result from “For a repeated miss direction, adjust only the start position, visual contrast, support or approach angle and make three matched reaches.” does not yet meet this declared check: The next three endpoints move toward centre without greater effort.
Correction: Return to the start of “Correct one variable”, reduce complexity or pace, and repeat only the part needed to satisfy: “The next three endpoints move toward centre without greater effort.”

Stop / get help: Stop for dizziness, new double vision, sudden visual change, headache, weakness, numbness, pain or loss of balance; urgent new neurological symptoms need emergency assessment.

Mark step 7 complete

Move one target only

After ten accurate placements, move one target five centimetres while keeping the object, seat and rule constant. Make two reaches.

Why this step exists

A small geometry change tests near transfer without adding speed or moving targets.

Success check

The changed target is recorded separately and reached with stable support.

I’m stuck on this step

Reset: Re-read this authored instruction — “After ten accurate placements, move one target five centimetres while keeping the object, seat and rule constant. Make two reaches.” — and its success check, then attempt only this step.

Possible snag: The result from “After ten accurate placements, move one target five centimetres while keeping the object, seat and rule constant. Make two reaches.” does not yet meet this declared check: The changed target is recorded separately and reached with stable support.
Correction: Return to the start of “Move one target only”, reduce complexity or pace, and repeat only the part needed to satisfy: “The changed target is recorded separately and reached with stable support.”

Stop / get help: Stop for dizziness, new double vision, sudden visual change, headache, weakness, numbness, pain or loss of balance; urgent new neurological symptoms need emergency assessment.

Mark step 8 complete

Correct versus incorrect execution

These accessible process diagrams are built from the tutorial’s own right/wrong teaching. They are not anatomical illustrations and do not add technique beyond the canonical tutorial.

Fix the geometry — Consistent distance makes endpoint errors comparable.

Correct / safer

Mark the seat, object start point and six target positions. Confirm each target can be touched while balance stays supported.

Wrong / riskier

Change seat and target distance between every attempt.

Look at the endpoint — A declared visual endpoint guides the movement path.

Correct / safer

Before lifting the object, identify the target centre and keep visual attention there during the final half of the reach.

Wrong / riskier

Watch the hand only and lose the endpoint during release.

Lift with a secure light hold — A stable object and visible target reduce avoidable correction.

Correct / safer

Pick up one soft object using enough grip to prevent slipping, without crushing or hiding the target.

Wrong / riskier

Squeeze a bulky object until it blocks the target.

Reach on a smooth path — Smooth, controllable travel limits overshoot and collision.

Correct / safer

Move at a pace that permits stopping. Keep the object above the clear table and avoid a last-second sideways sweep.

Wrong / riskier

Swing quickly and rely on a last-second correction.

Pause then release — A brief pause separates endpoint control from release momentum.

Correct / safer

Pause directly over or on the centre for one count, then open the hand or release the aid without pushing.

Wrong / riskier

Push the object across the target instead of controlling release.

Method-structure checklist

10 of 10 structural checks present

Ordered, Power-specific instructions — present
Every activity has a success check — present
Materials or supplied records are declared — present
Measurement or assessment rule is present — present
Tutorial-specific troubleshooting is present — present
Stopping or escalation boundary is present — present
Every activity has an adjacent alternative — present
Correct-versus-incorrect comparison is present — present
Evidence context is bound to the Power record — present
Planning metadata is present — present

The method-readiness band and presence checklist assess tutorial presentation and are separate from evidence quality for the underlying Power. They are automated editorial aids, not human approval.

Manual editorial sign-off: Pending. This tutorial must not display a human-approved state until an identified editor signs the exact content hash.