This study compares two frequently used operationalizations of understanding: factual knowledge and perceived familiarity. The authors argue that these measurements--which have been used interchangeably in past research--are conceptually distinct and should be treated as such. Using hierarchical...

Government regulations to address technological risks are important for the successful development and application of nanotechnology, but there is an ongoing debate in the USA about who is responsible for the regulation of nanotechnology. In a mail survey of leading US nano-scientists, we...