TY  - JOUR
PY  - 2004//
TI  - The intervention selection bias: an underrecognized confound in intervention research
JO  - Psychological bulletin
A1  - Larzelere, Robert E.
A1  - Kuhn, Brett R.
A1  - Johnson, Byron
SP  - 289
EP  - 303
VL  - 130
IS  - 2
N2  - Selection bias can be the most important threat to internal validity in intervention research, but is often insufficiently recognized and controlled. The bias is illustrated in research on parental interventions (punishment, homework assistance); medical interventions (hospitalization); and psychological interventions for suicide risk, sex offending, and juvenile delinquency. The intervention selection bias is most adequately controlled in randomized studies or strong quasi-experimental designs, although recent statistical innovations can enhance weaker designs. The most important points are to increase awareness of the intervention selection bias and to systematically evaluate plausible alternative explanations of data before making causal conclusions.<p /> <p>Language: en</p>
LA  - en
SN  - 0033-2909
UR  - http://dx.doi.org/10.1037/0033-2909.130.2.289
ID  - ref1
ER  -