A colleague at RTI asked me about power analyses for PSM, specifically, should he assume dependent samples for his power analysis? Recall that with dependent samples, we pair observations at the analysis stage. For example, we might calculate the change over time for two observations of the same individual, or compare husbands’ and wives’ perception of their marriages. With matching...
In defense of the SAT
Takes on popular myths that the SAT does not predict college success, is only driven by socio-economic status, etc.:
Yes, IQ Really Matters