6. What did a mental transformation study using rotated letters by Cooper&Shepard (1973) show?

That mental simulation was not an efficient way of completing matching tasks
That pps mentally simulated the physical event of a rotated letter in order to efficiently perform during matching
That there was evidence of a visual code store during matching
Pps retrieved the information of the letter form from the visual code

7. What did early work by Posner & Mitchell (1967) aim to show?

How accurate a pps cog. processes can be when asked to match letters
The time taken for pps to respond to the task represents the cog. processes, how long it takes to recover and run visual/name codes
How accurate pps guesses were when choosing matching letters