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  1. S

    Can I use a pearson correlation with repeated measures?

    I have measured 5 different behavioural responses of birds to birdsong playbacks from a speaker (e.g. how long they took to sing back to the playback song, how long they took to approach the speaker etc..). Each bird was measured twice for each behaviour. Now I would like to know if...
  2. S

    In a negative binomial GLM or GLMM what does theta stand for?

    When using a GLM or GLMM with a negative binomial distribution in R it is usually necessary to set the value of theta in the model. But what does theta actually stand for? And how do I caluclate it? I have been able to get around this for now by setting my models to calculate theta for me...