The offer, ‘Self-serve sample C’ allows researchers to find people with domain expertise in areas including medicine, programming, law, science and languages.

Researchers can use specialist filters for these audiences, including questions on skills or professional background, and set their own price per complete response.

Nik Samoylov, founder of Conjointly, said it offers researchers “self-serve access to ID-verified specialists, so they can reach the right people without the cost and delay of traditional expert recruitment”.