I cant determinePopulation & Sample description & "N="for the links below. I am trying to determine what the research is population sample and description is.

For example, for: Garriott, P. O., Hudyma, A., Keene, C., & Santiago, D. (2015). Social cognitive predictors of first and non-first-generation college students' academic and life satisfaction. Journal of Counseling Psychology, 62(2), 253-263. doi:https://doi.org/10.1037/cou0000066

The population nd sample description is: N=414 Students from two 4-year universities for the link above.

I cant determinePopulation & Sample description & "N="for the links below.

1. https://journals.sagepub.com/doi/abs/10.1177/1521025119854688
2. https://www.researchgate.net/publication/347892854_On_Being_the_First_The_Role_of_Family_in_the_Experiences_of_First-Generation_College_Students
3. https://files.eric.ed.gov/fulltext/EJ1255401.pdf
4. https://spssi.onlinelibrary.wiley.com/doi/full/10.1111/asap.12288