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The effect of implicit versus explicit instruction on a cognitive bias modification task in relation to pain

The effect in healthy participants of implicit versus explicit cognitive bias modification for interpretation on responses to a cold pressor task

Status
Not yet recruiting
Phases
Unknown
Study type
Interventional
Source
ANZCTR
Registry ID
ACTRN12615000595516
Enrollment
104
Registered
2015-06-09
Start date
2015-07-03
Completion date
Unknown
Last updated
2020-01-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

None listed

Brief summary

This study will investigate the effect of modifying interpretations of ambiguous faces on performance of a painful task. Specifically, we will compare how effective training participants to interpret an ambiguous facial expression as happy compared to painful. We are interested to know whether this training is more effective when instructions are explicit versus implicit.

Interventions

The intervention is a computerized task. Participants are either trained to interpret ambiguous tasks as painful or happy; and are either trained implicitly or explicitly. So, there are four arms: Arm 1: An implicit task where ambiguous faces are followed by a target that appears where the target was previously replaced by the painful face. Arm 2: An implicit task where ambiguous faces are followed by a target that appears where the target was previously replaced by the happy face. Arm 3: An exp

The intervention is a computerized task. Participants are either trained to interpret ambiguous tasks as painful or happy; and are either trained implicitly or explicitly. So, there are four arms: Arm 1: An implicit task where ambiguous faces are followed by a target that appears where the target was previously replaced by the painful face. Arm 2: An implicit task where ambiguous faces are followed by a target that appears where the target was previously replaced by the happy face. Arm 3: An explicit task where participants are asked to indicate if they consider the ambiguous face to be happy or painful and are given feedback that they are incorrect if they choose happy and correct if they choose painful. and Arm 4:An explicit task where participants are asked to indicate if they consider the ambiguous face to be happy or painful and are given feedback that they are incorrect if they choose painful and correct if they choose happy. Each of the four arms administers a single one-off computerized training that lasts 20-30 minutes and the cold pressor is the outcome not part of the intervention.

Sponsors

The University of Sydney
Lead SponsorUniversity

Study design

Allocation
Randomised controlled trial
Intervention model
Factorial
Primary purpose
Educational / counselling / training
Masking
Open (masking not used)

Eligibility

Sex/Gender
All
Age
18 Years to No maximum
Healthy volunteers
Yes

Inclusion criteria

First year psychology students

Exclusion criteria

Raynauld's phenomena, epilepsy, pain disorders, heart conditions.

Outcome results

None listed

Source: ANZCTR · Data processed: Feb 4, 2026