We consider a decisionmaker who "narrowly brackets", i.e. evaluates her decisions separately. Generalizing an example by Tversky and Kahneman (1981) we show that if the decisionmaker does not have constant-absolute-risk-averse preferences, there exists a simple pair of independent binary decisions where she will make a …rstorder stochastically dominated combination of choices. We also character...

Rational agents with differing priors tend to be overoptimistic about their chances of success. In particular, an agent who tries to choose the action that is most likely to succeed, is more likely to choose an action of which he overestimated, rather than underestimated, the likelihood of success. After studying the comparative statics of this mechanism, I show that it also causes agents to at...

We recently identified a tumor-associated antigen that was recognized by human monoclonal antibody L94. The antibody-reactive 707-AP sequence RVAALARDAP, cloned from a melanoma cDNA library, was also found to be recognized by peripheral blood lymphocytes (PBLs) from melanoma patients. In this study, 707-AP was used to stimulate melanoma patients' PBLs for the establishment of peptidespecific CT...