HLSC 3F20 Lecture Notes - Lecture 15: Randomized Experiment, Time Series, Jargon
24 Jan 2017
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Hlsc 3f20 program planning & evaluation monday, january 23, 2017. You measure resilience of first-year students in october (before copecareconnect) and in march (after. At first, you were nervous and doubted your skills, by the end you felt much better. You invite students to participate i(cid:374) (cid:455)ou(cid:396) e(cid:448)aluatio(cid:374) of copeca(cid:396)eco(cid:374)(cid:374)e(cid:272)t. mostl(cid:455), it(cid:859)s just people (cid:455)ou know who agree to fill in your surveys. What is the biggest threat to internal validity here? (self) selection. If the evaluation design does not possess internal validity, conclusions about whether the initiative caused the outcome cannot be made. From designs with igh internal validity, it can be concluded that x caused y. When we evaluate our initiative, we want to confirm that observed changes in y are due to x (intervention). Changed in y can be due to maturation: passage of time causes systematic changes in participants.
