tetrachoric correlation (noun)

1. The study found a significant tetrachoric correlation between religious belief and moral values.

2. The tetrachoric correlation between wearing designer labels and social status was found to be high among the participants.

3. The artist explored the tetrachoric correlation between color preference and emotional response in her latest series.

4. In the fantasy novel, there was a tetrachoric correlation between the protagonist's magical abilities and their level of courage.