Decline effects, experimenter dependence, and evasive result patterns are documented across parapsychology paradigms generally, not only in correlation-matrix experiments.

Kennedy 2003: the elusiveness pattern documented field-wide

what the source states

Kennedy's review argues from the field's own record that psi effects are "capricious, actively evasive, and unsustainable": initially significant paradigms decline, effects shift between variables and experimenters, and no protocol has ever produced sustained, exploitable results.

what we infer

Confirms that the explanandum MPI targets is real as a sociological and statistical pattern in the literature. It does not favor MPI's explanation of the pattern over the null-plus-selection explanation — Kennedy himself canvasses both directions.

limitations

• Narrative review by a single author; the pattern description is not itself a quantitative meta-analysis.