Millisecond Forums » Millisecond Forums » Inquisit 5 » ST-IAT with several target categories

ST-IAT with several target categories

iksas — Mon, 10 Apr 2017 10:28:13 GMT

Hi all,

This is my first post. I would like to ask you abour the theoretical sense of a choice I have to make before coding the experiment on Inquisit.

I'm designing an experiment with four target categories (one for each continent on Earth but Antartica, represented by pictures) and two attribute categories (good vs. bad, represented by words). The goal of the experiment is to compare the d-score of each case to see if my participants have a positive or negative bias towards any of the continents. In order to achieve that, I think that the best option is to run five separate ST-IAT, more or less like Bluemke and Friese (2008) did.
Something like:
ST-IAT 1 first block: good+Europe v bad
ST-IAT 1 second block: good v bad+Europe
ST-IAT 2 first block: bad v good+Africa
ST-IAT 2 second block: bad+Africa v good
ST-IAT 3 first block: good+America v bad
ST-IAT 3 second block: good v bad+America
ST-IAT 4 first block: bad v good+Asia
ST-IAT 4 second block: bad+Asia v good

My question is: would it make sense, conceptually speaking, to make a unique ST-IAT instead of five separate ones, in which all the target categories would be showed? In other words: is a good idea to show a mix of different target categories in the same ST-IAT?
Something like:
ST-IAT first block: good+Continents v bad
ST-IAT second block: good v bad+Continents
(where the Continents stimulus would be displayed on a randomized order along with the attributes).
Trial example: great, America, disgusting, Europe, yucky, Asia, triumph, Asia, rotten, joy, glad, sad, Africa, happy...

I'm not sure if I've been able to explain my idea. Please feel free to comment. Any help will be welcome!

Thank you for your attention.

Kind regards,
Iksas

RE: ST-IAT with several target categories

iksas — Mon, 10 Apr 2017 10:28:13 GMT

[quote]

[b]Dave - Monday, April 10, 2017[/b]

[quote]

[b]iksas - Monday, April 10, 2017[/b]

[quote]

[b]Dave - Monday, April 10, 2017[/b]

[quote]

[b]iksas - Sunday, April 9, 2017[/b]

Hi all,

[/quote]

> My question is: would it make sense, conceptually speaking, to make a unique ST-IAT instead of five separate ones, in which all the target categories would be showed?

No. This would measure whether the concept "continent" is more associated with "good" or with "bad". It would not tell you whether a specific continent (e.g. Europe) is viewed more positively (or negatively) than some other continent (e.g. Africa).

[/quote]

Dear Dave,

Wouldn't be correct if I take the results of each trial by separate, group them by continent, and then analyze them? My gut tells me that it would be not correct but I fail on seeing why.

Thank you for your kind answer.

Kind regards,
Iksas

[/quote]

No. An IAT is supposed to assess associations between a concept (or concepts) and evaluative categories (e.g. good - bad).

"Continent" is the concept. Europe, Africa, etc. are *exemplars* representing the concept.

If you want to assess associations between the *concept* Europe and evaluative categories, you need exemplars representing that concept. (Same for Africa, etc.).

[/quote]

Thanks!

RE: ST-IAT with several target categories

Dave — Mon, 10 Apr 2017 10:15:07 GMT

[quote]

[b]iksas - Monday, April 10, 2017[/b]

[quote]

[b]Dave - Monday, April 10, 2017[/b]

[quote]

[b]iksas - Sunday, April 9, 2017[/b]

Hi all,

[/quote]

RE: ST-IAT with several target categories

iksas — Mon, 10 Apr 2017 09:56:30 GMT

[quote]

[b]Dave - Monday, April 10, 2017[/b]

[quote]

[b]iksas - Sunday, April 9, 2017[/b]

Hi all,

[/quote]

RE: ST-IAT with several target categories

Dave — Mon, 10 Apr 2017 07:01:28 GMT

[quote]

[b]iksas - Sunday, April 9, 2017[/b]

Hi all,

[/quote]