In his seminal article The Necessary and Sufficient Conditions of Therapeutic Personality Change, originally published in 1957, Rogers identified three core components of what he considered to be the effective approach to counselling. Since then, few theorists, commentators, or clinicians have raised any arguments against the qualifier "necessary." However, the label "sufficient" has been targeted by a number of critics. Based on your understanding of the humanistic approach to counselling in general and the person-centred school in particular, do you think that the three "core conditions" are indeed sufficient for producing a "therapeutic personality change"?