Final answer:
In Kosslyn's "imaginary island" study, researchers found that it takes longer to view a mental image that has a complex shoreline. This suggests that the complexity of the visual image can impact the speed of mental processing and navigation.
Step-by-step explanation:
In Kosslyn's "imaginary island" study, researchers found that it takes longer to view a mental image that has a complex shoreline. The study involved participants visualizing an imaginary island and then answering questions about specific locations on the island. They found that participants took longer to mentally navigate a complex shoreline compared to a simpler, straight shoreline. This suggests that the complexity of the visual image can impact the speed of mental processing and navigation.