identify the independent, dependent, and extraneous variables from the following research topics/titles

1. how does logical thinking develop critical thinking of millenials

2. effects of koreanovelas on the moral values of filipinos

3. effectiveness of collaborative learning in increasing the communicative competence of shs

4. effect of texting to the grammatical competence of grade 10 students

5. class shifting: its effect to the academic performance of shs students​