AP PSYCHOLOGY

Detailed explanation-1: -Reliability is the extent to which a finding is consistent. It is the extent to which psychiatrists can agree on the same diagnosis when independently assessing patients (inter-rater reliability). In order for a classification system to be reliable, the same diagnosis should be made each time.

Detailed explanation-2: -Inter-rater reliability refers to the consistency with which a particular assessment method comes to the same conclusions when applied by different raters to the same body of information. Reliability is particularly important when there is no ‘gold standard’ as is the case in making psychiatric diagnoses.

Detailed explanation-3: -Intrarater reliability is a measure of how consistent an individual is at measuring a constant phenomenon, interrater reliability refers to how consistent different individuals are at measuring the same phenomenon, and instrument reliability pertains to the tool used to obtain the measurement.

Detailed explanation-4: -Interrater reliability is the most easily understood form of reliability, because everybody has encountered it. For example, watching any sport using judges, such as Olympics ice skating or a dog show, relies upon human observers maintaining a great degree of consistency between observers.

Detailed explanation-5: -The simple way to measure inter-rater reliability is to calculate the percentage of items that the judges agree on. This is known as percent agreement, which always ranges between 0 and 1 with 0 indicating no agreement between raters and 1 indicating perfect agreement between raters.