. The paper develops a simple and parsimonious model that relates earnings and unexpected earnings to market returns. The analysis emphasizes that any model under uncertainty must be consistent with the theory of value, earnings, and dividends under certainty (i.e., Hicksian income theory). An extension of this theory exists such that the model subsumes uncertainty. The Hicksian approach is useful because it embeds key dividend irrelevancy concepts due to Modigliani and Miller (1961), and these can be retained under uncertainty. An interesting empirical proposition can be inferred from the model: earnings, rather than the change in earnings, ought to serve as a premier exploratory variable of returns. This contention is consistent with some recent empirical findings due to Easton and Harris (1991). RA©sumA©. L'auteur A©labore un modA¨le simple et parcimonieux qui relie les bA©nA©fices, et les bA©nA©fices imprA©vus, aux rendements du marchA©. L'analyse met en relief le fait que tout modA¨le en situation d'incertitude doit Aatre conforme Ai la thA©orie de la valeur, des bA©nA©fices et des dividendes en situation de certitude (c'est†Ai†dire la thA©orie hicksienne des bA©nA©fices). Cette thA©orie peut Aatre A©largie de telle sorte que le modA¨le tienne compte de l'incertitude. L'utilitA© de l'approche hicksienne tient au fait qu'elle englobe les concepts clA©s de non†pertinence relatifs au dividende que l'on attribue Ai Modigliani et Miller. et que ces concepts peuvent Aatre appliquA©s en situation d'incertitude. Ce modA¨le permet de formuler une proposition empirique intA©ressante: les bA©nA©fices, plutA´t que l'A©volution des bA©nA©fices, doivent servir de premiA¨re variable exploratoire des rendements. Cette affirmation est conforme aux rA©sultats empiriques rA©cemment obtenus pas Easton et Harris.
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