definition therefore has both sensitivity (considering subjective experience) and practicality (using objective measures)
AO3 behaviour may be functional
limitation is that some apparently dysfunctional behaviour can be beneficial for the individual
AO3 behaviour may be functional
some mental disorders, such as eating disorders or depression, may lead to extra attention for the individual. such attention is rewarding and functional rather than dysfunctional
AO3 behaviour may be functional
failure to distinguish between functional and dysfunctional behaviours means that this definition is incomplete