I managed to get myself confused on this one. So I am planning to conduct an experiment within an organization. I want to explore effects of recognition on people's motivation. Recognition will be in a form of personalised recognition letter. Experimental group will receive the letter, control group won't.

I wanted to measure levels of intrinsic and extrinsic motivation in both groups prior to the intervention, and then post-intervention.

  • my IVs: intervention/no intervention; time period 1/time period 2
  • my DV: motivation


  • is it independent groups design and I will need factorial ANOVA? Or time doesn't count as a variable?
  • or maybe I don't need to measure motivation levels before at all?

closed as off-topic by Robin Kramer, Arnon Weinberg, AliceD, Seanny123, Chris Rogers Nov 29 '16 at 15:16

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    $\begingroup$ I'm voting to close this question as off-topic because the question is purely statistical and, therefore, is a better fit for Cross Validated. $\endgroup$ – Robin Kramer Nov 15 '16 at 6:49

You could call it a 2 by 2 mixed design where condition is a between-subjects factor and has two levels (intervention, no intervention) and time is a within-subjects factor and has two levels (time 1 and time 2).

Regarding how to analyse this data, check out this question on Best practice when analysing pre-post treatment-control designs.


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