Three studies tested the ability of children of different ages to comprehend spoken sentences while viewing pictures that differed from the sentences according to some plausible combinations of actor, action, and beneficiary. In the first two studies, involving a total of 140 subjects, nine contextual conditions were used, including sentence only,…

In order to investigate the development of word-formation abilities, 3-, 5-, and 7-year-olds were asked to act out with toys, judge, and make up sentences containing instances of class extension. Some sample sentences are "Can you upside-down the clown?" and "Broom the spoon." Children dealt with such sentences in much the same…

Three empirical studies were conducted to investigate the hypothesis that the "easy to see" construction (such as in the sentence "children are hard to understand") is acquired at a younger age than the 7-9 year range reported by previous studies (Cambon and Sinclair, 1974; Chomsky, 1969; 1972; Cromer, 1970; Kessel, 1970).…