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N-Back Test

Scritch — Wed, 16 Nov 2016 01:46:02 GMT

Hi,
I am having a look at the Adaptive N-Back Test, and as I understand it, the test increases in difficulty only if the participant is doing well. I just wondered if it would be possible to adapt the script so that it increases in difficulty regardless of whether the participant is doing well or not. I'm a bit of a novice with Inquisit to be honest, having only made minor changes to a script before, so any advice would be very much appreciated!
Many thanks
Kind regards
Richard

RE: N-Back Test

Scritch — Wed, 16 Nov 2016 01:46:02 GMT

[quote]

[b]Dave - Tuesday, November 15, 2016[/b]

[quote]

[b]Scritch - Tuesday, November 15, 2016[/b]

[/quote]

The adaption -- i.e., in- or decreasing the N-level based on performance -- happens here:

<block s_ntask_adapt>
...
/ branch = [if (values.N < values.LastN && ((values.Misses + values.FalseA) < 3)) {values.N += 1; block.s_ntask_adapt}]
/ branch = [if (values.N > 1 && ((values.Misses + values.FalseA) > 5)) {values.N -= 1; block.s_ntask_adapt}
                    else block.s_ntask_adapt]
</block>

I.e., as detailed in the comments
*if a participant makes fewer than 3 errors on a level then participant moves up a level (see Jaeggi et al (2010))
*if a participant makes more than 5 errors on a level then participant moves down a level (see Jaeggi et al (2010))
*otherwise participant stays on the same level (see Jaeggi et al (2010))

If you simply want to increase N regardless of performance, replace that with a single /branch that reads

<block s_ntask_adapt>
...
/ branch = [if (values.N < values.LastN) {values.N += 1; block.s_ntask_adapt}]
</block>

[/quote]

Hi Dave,

Thanks very much indeed for the reply! That's perfect, very very much appreciated!

Kind regards
Richard

RE: N-Back Test

Dave — Tue, 15 Nov 2016 08:36:50 GMT

[quote]

[b]Scritch - Tuesday, November 15, 2016[/b]

[/quote]