Eye and hand

An analysis of matching tasks in terms of memory demands has two advantages: it accounts for some variations in the difficulty of matching by eye and by hand, and it suggests an analysis of "visual" and "tactual" tasks in terms that may cut across modalities. Memory for information gathered by hand appears to be less stable than for information gathered by eye, more likely to show loss when the number of comparison objects is large. As memory demands increase, accuracy declines first on any matching that starts with inspection by hand.