Openness measures came into force at the start of year

The investigation will focus on charges and the groups which should be covered by the measures.

It will also decide whether information relating to the Gleneagles G8 summit should stay under wraps.

About 10,000 bodies, from the executive and the Scottish Parliament to GPs' surgeries, are covered by the rules.

Citizens and public bodies will be able to have their say as part of the inquiry into the freedom of information (FOI) measures.

Minister for Parliamentary Business Margaret Curran claimed that more than two thirds of Scots were aware of the new legislation.

"It has already given people the opportunity to find out more about their local schools, hospitals and councils and the feedback to date is generally positive," she said.

It is already clear that some lessons could be learned Margaret Curran MSP Parliamentary Business Minister

"Experience from other countries shows that freedom of information has led to improved communication with the public, greater transparency and accountability and a significant rise in the pro-active release of information."

But she added: "While we can't judge the overall success of FOI on the first few months, we can use the experience to look at whether there are ways we can improve things.

"It is already clear that some lessons could be learned, for example, on the operation of the fee structure and what bodies are covered by the act."

The minister added: "That's why the Scottish government has decided to review the first few months of FOI and allow people to have their say on any suggested changes.

Advertising campaign

"We will also be reviewing whether there is still a need for the ministerial certificate exempting certain G8-related information from FOI on grounds of national security."

Fresh efforts were launched in February to tell people what rights they had under the new regulations.

The Freedom of Information Commission in Scotland launched a television advertising campaign and a booklet.