Answer: ZENER
The answer ZENER has 7 possible clues. See the results below.
Possible Clues:
- ____ cards, which show one of five different symbols, have been used in experiments about ESP
- ___ cards (ESP testing items)
- Psychologist Karl who designed cards to test for 67-Across
- ___ cards (tools used in ESP testing)
- ___ cards (items used in ESP tests)
- __ cards, used in ESP experiments
- ___ cards (ESP testers)