Health TrialsbyHealthPanel

Mixed Vs Blocked Search: Four Unique Tasks

ConditionsVisionHealthyAttention
Trial statusRecruiting
Trial phaseNot applicable
Trial typeInterventional
Biological sexAll
Age18+
SponsorBrigham and Women's Hospital

About this trial

The goal is to look for qualitative differences in visual search behavior when one search is performed many times in a row compared to when multiple search tasks are intermixed. Four search tasks are tested. In the Mixed condition, the four tasks are randomly changed from trial to trial. In the Blocked condition, each task is run as a block of 100 trials.

Eligibility criteria

This trial accepts healthy volunteers

Qualifiers

Pass Ishihara color vision test

Disqualifiers

vision less than 20/25 with correction

history of neuromuscular or visual disorders

Trial design

Design model

Sequential

Treatments tested in this trial

  • Mixed trials

    Behavioral

    All tasks will be randomly mixed in a single block of 400 trials.

  • Blocked Trials

    Behavioral

    Each search task will be presented in a block of trials.

Treatment groups

40 Participants
are divided into 2 treatment groups
Group A: Blocked TrialsExperimental treatment 1 intervention
Group B: Mixed TrialsExperimental treatment 1 intervention

Trial outcomes

Primary outcomes

1

Response Time (RT)

How long it takes to respond that the target is present or absent.

Time frame
Through study completion, an average of one year

Secondary outcomes

1

Accuracy

The rates of false positive and false negative errors

Time frame
through study completion, an average of one year

Other outcomes

Sponsors and contacts

Click on the lead sponsor to view all of their trials.

Brigham and Women's Hospital

Lead sponsor

National Eye Institute (NEI)

Collaborator

Source ClinicalTrials.gov
Apply now