Emerging market investors are trying to gauge whether a currency crisis and the steep interest rate hikes being used to fight it could turn into a broader slowdown and even recession.

On Thursday, Turkey's central bank attempted to draw a line under a lira collapse of almost 40 percent this year by hiking interest rates more than 6 percentage points to 24 per cent.

Argentina is struggling to shore up its peso, which has more than halved in value despite punitive interest rate rises to 60 per cent.

Other currencies have been caught in the slipstream, with India's rupee plumbing record lows and South Africa's rand, Russia's rouble and Brazil's real losing 15-20 percent this year so far.

Signs are appearing that months of market turmoil are starting to take the toll on real economies. South Africa unexpectedly entered recession in the second quarter of this year, Argentina is predicted to follow suit and Turkey is now widely forecast to experience a hard landing over the next year.

So what is growth like in these countries right now, what signs are there of a shock to business and consumer confidence and has the near sudden stop in investment flows seen 2019 economic forecasts deteriorate markedly?

Business confidence

Purchasing manager indexes have suffered sharp drops across many developing nations, according to data earlier in the month.

"When you have an environment where (the) US dollar is strengthening and US front-end rates are going up that tightens external financial conditions for emerging markets, especially for the deficit economies," said Murat Ulgen, global head of emerging markets research at HSBC.

Domestic financial conditions

Meanwhile faced with capital outflows, many emerging market policy makers have opted to hike rates, thereby also tightening domestic financial conditions, Ulgen added.

"Given that markets have been volatile, generally speaking, and rates have been higher and equity markets have been lower in summer months ... it is highly likely that financial conditions are still staying in the negative territory," he said.

Having tumbled some 22 per cent from their January peaks, emerging equity markets are in territory commonly regarded as a bear market, is often considered to be self-sustaining decline.

"Tighter financial conditions are going to weigh on economic activity going forward," predicted Ulgen.

History of sudden stops

Emerging markets are familiar with such crises.

The Institute of International Finance found nine episodes since 1980 where when real exchange rates fell 30 percent or more, the devaluation was sustained for at least three years and the decline did not reverse a previous overvaluation.

Mexico suffered such a fate in 1995, Indonesia and Russia in 1998 and Brazil a year later. Meanwhile Argentina and Uruguay recorded such declines in 2002, Egypt in 2003 and 2016 and Ukraine in 2014.