Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

Transcranial direct current stimulation (TDCS) is the application of weak electrical stimulation to the brain.It has been reported that application of TDCS can help people

Transcranial direct current stimulation (TDCS) is the application of weak electrical stimulation to the brain.It has been reported that application of TDCS can help people suffering from depression and other mental disorders.A neuroscientist hypothesized that TDCS applied to specific regions of the brain could improve performance on cognitive tasks.She obtained 100 undergraduate psychology majors from her university's subject pool and randomly assigned 50 of them to the experimental group (receiving TDCS) and 50 to the control group (no TDCS).All subjects were connected to the equipment for delivering the weak current to the brain, however only those in the experimental group received actual stimulation.During the experimental trials they received 2 milliamps of current applied to the right temporal lobe.

The subjects performed 500 trials of a mental rotation task.In this task subjects are presented with two stimuli that are rotated images of one another.By mentally rotating one image it is possible to align the images so that they are identical.How on some trials, typically one-half, one image is also flipped front to back so that the two images can never be rotated to identical images.The subject's task is to respond as quickly as possible either same or different by pressing one of two keys.The amount of time (in milliseconds) it takes the subjects to respond is recorded.

1). What type of research design was used?

2). Was there a manipulated independent variable?If so, what was it?

3). What was the dependent variable?

4). How were subjects assigned to the treatment conditions?

Step by Step Solution

There are 3 Steps involved in it

Step: 1

blur-text-image

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

blur-text-image

Step: 3

blur-text-image

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Differential Equations With Boundary-Value Problems

Authors: Dennis G Zill, Brad Strong, Michael Cullen

7th Edition

1111798524, 9781111798529

More Books

Students also viewed these Mathematics questions

Question

Explain all drawbacks of the application procedure.

Answered: 1 week ago

Question

1. Maintain my own perspective and my opinions

Answered: 1 week ago

Question

2. What do the others in the network want to achieve?

Answered: 1 week ago