Construct: Constructs accurately represent reality.Convergent: Simultaneous measures of same construct correlate.Discriminant: Doesn't measure what it shouldn't.Internal: Causal relationships can be determined.Conclusion: Any relationship can be found.External: Conclusions can be generalized.Criterion: Correlation with standards.Predictive: Predicts future values of criterion.Concurrent: Correlates with other tests.Face: Looks like it'll work.