While the moment in time at which a particular nucleus decays is unpredictable, a collection of atoms of a radioactive nuclide decays exponentially at a rate described by a parameter known as the half-life, usually given in units of years when discussing dating techniques.
DEFINITION of 'Attachment'. A legal term referring to the action of seizing property in anticipation of a favorable ruling for a plaintiff who claims to be owed money by the defendant. Next Up.
Bowlby defined attachment as a âlasting psychological connectedness between human beingsâ (1969, p. 194). Bowlby (1958) proposed that attachment can be understood within an evolutionary context in that the caregiver provides safety and security for the infant.