People use the words “sprain” and “strain” almost interchangeably, to describe everything from a twisted ankle to a pulled hamstring. But they're not the same. A sprain is a stretch or tear in a ligament. Ligaments are bands of fibrous tissue that connect bones to bones at joints.
The Manual of Mental Disorders (DSM-IV-TR). This manual, which at the moment is at its fifth edition (DSM-V-TR), is the standard book by which psychiatric and psychological practicioners diagnose different mental conditions. It is also used as a references for many other practicioners which work in related fields.
2nd 5th and 1st one i think