Competency

1
Competency

• evidencing a choice (manifesting his consent if
  a patient cannot make a preference known or if he
  repeatedly changes his mind, his decision making
  capacity is impaired)
• evidencing a factual understanding of the issues
  (ability to understand vs. actual
  understanding) .

2
Competency

• being able to rationally manipulate the
  information (weighing risks and benefits reality
  testing)
• being able to appreciate the situation (being
  able to manipulate information and, in the
  context of the patients situation, being able to
  appreciate the consequences of giving or
  withholding consent)