This study follows the basic rule of experiments: correlation does not imply causation.Additionally, this study was an observational study, not an experiment, and we cannot draw cause and effect conclusions from experiments, thus we cannot claim that one type of attachment causes a higher well-being, we can only say that people with one type of attachment tend to have a higher well-being.This is because there are other lurking variables, in addition to the IV (type of attachment), that could have influenced the DV (well being).Some of these variables could have included the sensitivity of the caregiver, the availability of the caregiver, and the general environment of development.Any combination of these factors could have contributed to secure attachment which in turn could have influenced a higher well being.It is not possible to conclude that one type of attachment causes a higher well being because there are lurking variables in this study that could have contributed to this result.
I really agree with this idea, it really doesn't make complete sense to state that such solid conclusion can be made from pure observation. Moreover, it couldn't make sense for an entire population of children could be characterized by a few assumptions. I don't think that these results take into account the many different variables within the currents of human life.
