1 Subjects: “...human health, human-nature connection theory...”

2 Subjects: “...Mathematical theory of computation / bicssc...”

3 Subjects: “...self-determination theory...”

4 Subjects: “...theory of planned behavior...”

5 Subjects: “...graph theory...”

6 Subjects: “...Theory of Reasoned Action...”

7 Subjects: “...social relational theory...”

8 Subjects: “...social exchange theory...”

9 Subjects: “...partitioning theory...”

10 Subjects: “...tournament theory...”

11 Subjects: “...theory of planned behavior...”

12 Subjects: “...reference group theory...”

13 Subjects: “...ecological niche theory...”

14 Subjects: “...theory of mind...”

15 Subjects: “...protection motivation theory...”

16 Subjects: “...theory of mind...”