Method specific suicide rates were analysed by gender for 15-24-year-old Australians for the period 1974-1994. A major rise in hangings, & a lesser rise in poisonings by other gases and vapours, was evident in both genders. Firearm suicides for both genders peaked in 1985 with a subsequent modest decline. A major decline in poisoning by solid & liquid substances was evident in females. As the availability of hanging has not changed, the explanation of its rise must lie with acceptability. Drug overdoses excepted, there is no firm evidence accounting for these changing rates. Possible influences are discussed. (31 refs.)