Reliability analysis for different measurement scales?


New Member
Hi guys, I'm new here :)

I'm conducting a survey questionnaire which gathers feedback on English-as Second Language (ESL).

I have two measurement scales in my survey. Questions on how much time they spend learning English in different ways, and statements to indicate whether they "Strongly Agree to Strongly Disagree". Both are 5-point Likert scale.

I'm wondering if it's appropriate to conduct an overall reliability analysis for all the items combined, or should I conduct them separately?