Recent studies reveal that children can solve proportional reasoning problems presented with continuous amounts that enable intuitive strategies by around 6 years of age but have difficulties with problems presented with discrete units that tend to elicit explicit count-and-match strategies until at least 10 years of age. The current study tests whether performance on discrete unit problems mig...

(1809-49)-American poet, short-story writer, and critic who is best known for his tales of ratiocination, his fantastical horror stories, and his genre-founding detective stories. Poe, whose cloudy personal life is a virtual legend, considered himself primarily a poet. William Wilson (1839)-A tale about a man's struggle with his conscience — an allegory in which William Wilson meets William Wil...