P = The study also lacks ecological validity.
E = It was conducted in a lab setting, so all the variables were highly controlled.
E = Despite the strict control over confounding and extraneous variables this is not representative of real life so it lacks mundane realism and cannot be generalised to reality.
E = However, the high control of variables means it is easily replicable so the findings are highly reliable. This increases confidence in the idea that the findings were statistically significant.
L = This increases the confidence that can be placed in the attachment classification