Informed consent involves a shared decision-making process between a psychologist and the individual they are working with, where adequate information is provided for the individual to understand and decide on participation. For consent to be legally valid, the information must be comprehensible, agreement must be voluntary, and the individual must be legally competent. The document also explores informed consent considerations for specific populations requiring additional protections, such as minors, prisoners, inpatients, or those with cognitive impairments.