Hi @raphaelvallat,

Could you please add a possibility to test (planned) contrasts ?

Referring to Andy Field's Goggles.sav example from previously:

What I could imagine would be a function planned_contrasts() used like:

pg.planned_contrasts(data = data, dv = "Attractiveness", between = ['Alcohol'], contrasts = [-2,1,1] )

which would compare Placebo vs. Low dose & High dose.

Changing contrasts to [0,-1,1] would copare Low dosis vs. High dosis

Other contrasts would also be cool :)

Thank you very much!

Best regards!