InstantForum 2017-1 FinalMillisecond Forumshttps://forums.millisecond.com/Millisecond ForumsSat, 26 Sep 2026 23:53:15 GMT20https://forums.millisecond.com/Topic15475.aspxHi,<br/>I am currently conducting a test (GO/No-GO Association Task) to examine the implicit attitude towards individuals with disabilities. I understand that typical GNAT requires the derivation of d'prime indices for each critical block in order to compare the association strengths between targets and attributes.<br/><br/>However, I would also like to quantify a single index for implicit attitude in order to run subsequent analyses looking at its relationship with explicit measure of attitude. I am uncertain of the best way to do so though. Should I run the analyses based on the difference score by subtracting d'prime(disabilties+plesant) from d'rime(disabilities+unpleasant)? Or would it be more desirable to conduct the analyses with either the d'prime of&nbsp;(disabilities+pleasant) or (disabilities+unpleasant) alone? <br/><br/>I am more inclined towards the latter idea because I feel that the d'prime for each block is distinct on its own as weaker association between disabilities+pleasant may not necessary translate to a stronger association between disabilities+unpleasant. I feel that both are on relatively different scale. However, I have seen literature which have collapse both d'primes by deriving a difference score to quantify an implicit attitude index.&nbsp;<br/><br/>Anyone can advice? Thank you in advance!Thu, 05 Feb 2015 04:41:38 GMThonglingggshttps://forums.millisecond.com/Topic15481.aspxI see no problem with computing a difference score. However, this is a methodological question completely unrelated to Inquisit, so there might be better venues for you to discuss this (e.g. mailing lists or fora dedicated to statistics and research methods).<br/>Thu, 05 Feb 2015 04:41:38 GMTDavehttps://forums.millisecond.com/Topic15480.aspxHi Dave,<br/>Thanks for your reply. What would you suggest then if I am interested to explore the relationship between the implicit measure and the explicit measure?<br/>I would definitely need to quantify an index for the implicit measure in this case and D score (for IAT) might not be ideal as GNAT involves response deadline.<br/><br/>Look forward to your reply.Thu, 05 Feb 2015 04:30:12 GMThonglingggshttps://forums.millisecond.com/Topic15479.aspxMy quick thoughts: d' is a dimensionless statistic, so -- by definition -- there is no issue of scale. (To be strict: d' does not represent association in the sense of, say, a correlation coefficient. d' reflects the separation between the means of the signal and noise distributions under assumptions of normality.)<br/>Thu, 05 Feb 2015 04:15:37 GMTDave