The classical notion of beta-reduction in the lambda-calculus has an a
rbitrary syntactically-imposed sequentiality. A new notion of reductio
n beta' is defined which is a generalization of beta-reduction. This n
otion of reduction is shown to satisfy the Church-Rosser property as w
ell as some other fundamental properties, leading to the conclusion th
at this generalized notion of beta'-reduction can be used in place of
beta-reduction without sacrificing any of the fundamental properties.