Lindsey Ellefson is Lifehacker’s Features Editor. She currently covers study and productivity hacks, as well as household and digital decluttering, and oversees the freelancers on the sex and ...

Insight problem solving refers to the abrupt and transformative reorganisation of cognitive representations, typically resulting in an Aha! moment – a sudden experiential clarity that enables the ...

Sudden gains constitute a striking phenomenon in psychotherapy, characterised by rapid and substantial reductions in symptom severity between consecutive therapy sessions. In the context of cognitive ...