If you mean by shock therapy a rapidly liberalization of the economy, absolutely.
Regarding GDP, the problem is that GDP is a very misleading piece of data, it counts government spending as economic growth rather than economic vandalism. It classifies imports as ‘bad’ and ‘exports’ as good. I wouldn’t say it’s 100% useless, but it’s not a good number at all to indicate real economic growth.
“Can this drop be attributed to the policies of Salvador Allende?”
No. That was due some stupid monetary policy by the Chilean government combined with an international debt crisis that affected South America a lot.
“universal health care was abandoned (leading to epidemics of typhoid fever and hepatitis), unions were outlawed, military spending rose (for what? who the hell is going to attack Chile?), social security was “privatized” (with predictable results: ever-increasing government bailouts) and the poverty rate doubled, from 20% to 41%. Chile’s growth rate from 1974 to 1982 was 1.5%; the Latin American average was 4.3%.”
Abandoning universal health care, outlawing unions (even though I don’t think unions should be outlawed if they were no economic harm would result, it’s the opposite, actually), privatizing social security are all good things and are in no way or form related to these economic problems.
"From the period 1970-1985, there was little growth in GDP per capita, a decline in real wages by 20% and an (overall) increase unemployment from 6% to 14%.
The percentage of Chileans without adequate housing increased from 27 to 40 percent between 1972 and 1988, real prices increased dramatically, the richest quintile increased their share of income from 44.5% in 1970 to 54.6% in 1989 whilst the poorest decreased from 7.6% to 4.4%"
As I said, this kind of data can be deceiving, a better way to see that the free market measures taken by Pinochet worked is looking at Chile’s social indicators and comparing them to the rest of South America, in pretty much all of them Chile is in the top of the list, and they wouldn’t be that much better than the rest of South America if Chile hadn’t outgrown its neighbors economically by a large margin.
Please do it, compare today’s Chile’s social indicators with the rest of South America and see for yourself if these measures didn’t work.