Using a Manipulation Check to Uncover Age-Related Difference in Focus of Attention Instruction During a Balance Task

Area of Science:

• Motor Control
• Human Aging
• Cognitive Neuroscience

Background:

• Understanding age-related differences in motor control is crucial for developing effective interventions.
• Adherence to instructional cues can be influenced by cognitive and attentional factors.
• Previous research suggests potential age-related declines in attention allocation.

Purpose of the Study:

• To investigate age-related differences in adherence to external versus internal focus instructions during a postural control task.
• To determine if older adults exhibit distinct attentional strategies compared to younger adults when following specific movement constraints.
• To assess the effectiveness of manipulation checks in evaluating instruction adherence across age groups.

Main Methods:

• Participants performed a postural control task on a force platform, maintaining center of pressure within a target.
• Two attentional conditions were employed: external focus (cursor within target) and internal focus (even weight distribution).
• A manipulation check was integrated to assess adherence to the specified attentional focus.

Main Results:

• Younger adults successfully adhered to both external and internal focus instructions.
• Older adults demonstrated adherence to external focus but relied on external visual cues when instructed to use internal focus.
• This indicates a differential adherence pattern based on attentional focus and age.

Conclusions:

• Age-related declines in attention allocation may underlie differences in adherence to instructional constraints.
• The findings highlight the importance of considering attentional strategies when examining age-related changes in motor control.
• Implementing manipulation checks is recommended to ensure accurate interpretation of results in studies comparing age and postural control.