Understanding Society User Support

Hi,

I'm a final year student working on my dissertation and had a question about the variable ca_scghq1_dv in ca_indresp_w.
This variable is labelled as Subjective wellbeing (GHQ): Likert. I would like to know what exactly this is referring to.

When checking the data dictionary for this variable I can only find that if a negative value is assigned then this indicates missing values or a refusal to answer the question. What exactly is the question asked of participants?

When examining this variable in Stata I can see this variable can take on values ranging from 0-36 (excluding missing values) and I am unable to find out what these numbers refer to exactly. I have checked the questionnaire and the user guide but can't find anything.

Thank you!