Hi everyone,
I'm having some design matrix issues in my analysis at the moment. I am running CJS models using a long term data set of 20 years for sperm whales. My top model so far is phi(.)p(t) + b - 'b' is a behavioural effect on the first capture occasion - so in my survival pim, for each cohort, the first occasion is specified as "1" and then the subsequent occasions as "2". This is to incorporate a possible behavioural response to initial boat approach on an individual. I am wanting to also add photographic effort to this model, to see the effect. I am adding the raw number of photo-ID appropriate photos taken in each period. The design matrix looks correct to me but I am coming out with exactly the same results as the model without the effort, and the same number of parameters - so the effort parameter is not getting picked up somehow. I am probably just missing something simple but I can't seem to figure out what. I've read the relevant chapters and played around with it quite a bit but maybe some fresh eyes can pick something up! I've also attached my PIMS as well as the design matrix. Thanks in advance!