What does the flanker task do?
What does the flanker task do?
The flanker task (Eriksen & Eriksen, 1974) requires (spatial) selective attention and executive control. In this task, irrelevant stimuli have to be inhibited in order to respond to a relevant target stimulus. The Stroop task (Stroop, 1938) requires selective attention and inhibition control.
What does flanker mean in psychology?
a task in which stimuli are assigned one of two responses and the participant is required to respond to the target stimulus when this is flanked by other stimuli.
How is flanker task scored?
We calculated two interference scores for the Flanker task: (1) subtracting the mean RT for the correct congruent items from the mean RT for the correct incongruent items within the combination condition and (2) subtracting the mean accuracy for the congruent items from the mean accuracy for the incongruent items …
What is the Gratton effect?
The Gratton effect refers to the observation that performance on congruency tasks is often enhanced when the congruency of the current trial matches that of the previous trial.
What is a go Nogo task?
In the go/no-go task, participants respond to certain stimuli (“go” stimuli) and make no response for others (“no-go” stimuli). The main dependent measure in go/no-go tasks is the commission error rate (making a “go” response on “no-go” trials); fewer errors signifies better response inhibition.
Who invented the flanker task?
Michael Posner
Michael Posner and colleagues devised a simple method called the “flanker task.” They ask subjects to pay attention to a stimulus at a known location on the right or left side of the fixation point (marked with a dot or a plus sign) (Figure 8.11).
Who developed the flanker task?
What is flanker compatibility?
Quick Reference. A shorter choice reaction time in response to a target stimulus closely flanked by compatible than incompatible stimuli.
Why is Task Switching important?
Task switching allows a person to rapidly and efficiently adapt to different situations. It is often studied by cognitive and experimental psychologists, and can be tested experimentally using tasks like the Wisconsin Card Sorting Test.
What is the flanker compatibility effect?
How do you make a go no decision?
Best Practices for a Go/No Evaluation Process
- Gather the Information. The more information about the project, client, and decision-makers the better your decision will be.
- Gather Internal Stakeholders.
- Decide on Evaluation Factors.
- Analyze Project Against the Evaluation Factors.
- Coming to a Decision.
How do you do a go no-go test?
Go/No-Go task: Ask the patient to hold up one finger if the examiner holds up two, and two fingers if the examiner holds up one. Test the patient to ensure his or her understanding of the task. Perform 10 trials. A failure to respond correctly (ie, echopraxia) suggests a lack of normal response inhibition.
What is the purpose of the Eriksen Flanker Task?
The term Eriksen Flanker Task refers to a set of response inhibition tests used in cognitive psychology to assess the ability to suppress responses that are inappropriate in a particular context. In the tests, a directional response (generally left or right) is made to a central target stimulus.
How is the flanker task used to assess attention?
The flanker task for assessing attention. The flanker task is used to study visual selective attention and its brain basis. The subject looks only at the fixation point. Directional cues like the arrow draw attention to left or right flank, but no eye movements are allowed.
How did Eriksen and Eriksen do the test?
In the original test described by Eriksen and Eriksen in 1974, letter stimuli were used. Subjects were instructed to make a directional responses to certain letters, for example a right response to the letters H and K, and a left response to S and C. Each stimulus consisted of a set of seven letters, with the target in the central position.
What did Eriksen and Schultz do with the flanker test?
Eriksen and Schultz (1979) varied a number of features of the flanker tests, for example the size and contrast of the letters, or the use of forward or backward masking.