Wells, H. (1963). Effects of transfer and problem structure in disjunctive concept formation. Table 2. Mean number of trials required by POSTHOC In POSTHOC, we have focused on how prior knowledge influences learning rates and we have so far ignored other information used by human learners (e.g., perceptual salience of features, Bower & Trabasso, 1968). As a consequence, POSTHOC is not intended ...

BACKGROUND Although most community-based health insurance (CBHI) schemes are voluntary, problem of adverse selection is hardly studied. Evidence on the impact of targeted subsidies on adverse selection is completely missing. This paper investigates adverse selection in a CBHI scheme in Burkina Faso. First, we studied the change in adverse selection over a period of 4 years. Second, we studied t...

Health insurance is potentially subject to risk selection, i.e. adverse selection on the part of consumers and cream skimming on the part of insurers. Adverse selection models predict that competitive health insurers can eschew high-risk individuals by o¤ering contracts with low deductibles or copayment rates, while attracting low-risk individuals with higher copayments, resulting in a separati...