**2. Cross-modal category transfer**

Experiment 1 examined visual (V) or haptic (H) category learning followed by a transfer test in the same or alternate modality (VV, VH, HV, HH). Half of the subjects received random or systematic training. Particular contrasts were of special interest: (a) Transfer differences between the VV and HH conditions should reveal whether visual concepts are learned better than concepts learned haptically; (b) VV vs. VH and HH vs. HV should indicate how much information is lost when tested in an alternate modality; and (c) VH vs. HV would indicate whether information is transferred more readily from one modality to the other.
