Phenomenology is the philosophical root of biological psychiatry. Two aspects are essential: Firstly, phenomenology as description, using plain, unambiguous language, of events that arise in consciousness. Secondly, that the describing attempts to divest itself of all presumptive ideology and theory.
This attempt, to get at conscious events without the framework of any ideology whatsoever, is what is known as the phenomenological method, as first described by the philosopher Edmund Husserl.
Phenomenology arose in response to totalising, repressive, idealogically-laden accounts of consciousness, namely psychoanalysis [psychologism], the new religion – the displacement of one set of priests for another – and behavioural psychology [empiricism] – the conceptualisation of mental life as a reflexive machine, which can measured by numbers and statistical methods.
Phenomenology would morph into existentialism, structuralism and ultimately deconstructionism – the final annihilation of the foundation of all ideological positions, a freeing from the limitations of all possible psychologies, an escape from all totalising theory.
But behaviourism would fight back as cognitive psychology – an intellectual whimper. That fight back reveals itself as nothing more than an age-old grasp for power, another priesthood [secular & cosmopolitan this time] with the urge to define, to control and to trap consciousness within an ideology. The latest manifestation of the drive to confine consciousness within the linguistic framework of the day.
Phenomenology is a pure, cleansing water, devoid of all restrictions, limitations and theory, untainted by desire for power, with no need for faith, no need for belief, no shackles. As such it is the ideal anarchic antidote to all totalising psychologies.