Millisecond Forums

Testing the IAT

https://forums.millisecond.com/Topic22848.aspx

By Lmehok - 11/11/2017

I have been using the IAT for my research. I have been attempting to test the IAT to make sure that it is working correctly. In doing so I have attempted to take it with different biases by taking it more slowly for one group and then the other. When I score the results of my test trials, I am getting inconsistent D score directionality. In some instances, I get a negative number and in other cases, I get a positive number when I should be getting a D score in the same direction (both positive or negative).

Has anyone run into this problem before? All of the code matches the code from the millisecond website. 

I was wondering if anyone knows a better way to test the IAT or has any ideas why I am not getting consistent results.

Thanks.
By Dave - 11/13/2017

Lmehok - Saturday, November 11, 2017
I have been using the IAT for my research. I have been attempting to test the IAT to make sure that it is working correctly. In doing so I have attempted to take it with different biases by taking it more slowly for one group and then the other. When I score the results of my test trials, I am getting inconsistent D score directionality. In some instances, I get a negative number and in other cases, I get a positive number when I should be getting a D score in the same direction (both positive or negative).

Has anyone run into this problem before? All of the code matches the code from the millisecond website. 

I was wondering if anyone knows a better way to test the IAT or has any ideas why I am not getting consistent results.

Thanks.

> In some instances, I get a negative number and in other cases, I get a positive number when I should be getting a D score in the same direction (both positive or negative).

This sounds like you may not be properly accounting for the counterbalancing of the block order (compatible first vs incompatible first) in your scoring.