Behavioral, neuropsychological, and brain imaging research points to a dedicated system for processing number that is shared across development and across species. This foundational Approximate Number System (ANS) operates over multiple modalities, forming representations of the number of objects, sounds, or events in a scene. This system is…

Experiment 1 examined the relationship between dimensional preference and proportion of optional reversal shifts among adults. Experiment 2 examined dimensional preference and shift behaviors using an intradimensional-extradimensional shift paradigm. The results indicate that adults show the same type of behavior previously throught to…

Presents a theoretical account of human shift learning with the use of neural network tools. Details how simulations using the cascade-correlation algorithm which show that networks can capture the regularities of the discrimination shift literature better than existing psychological theories. Suggests that human developmental differences in shift…