You asked

Please send a copy of the full methodological design and cognitive testing findings of the research study described as 2020:6 in Section 3.2 of EAP148 - Methodology for decision making on the 2021 Census sex question concept and associated guidance

Please provide details of how respondents were recruited for the study.

Were any external organisation or agencies used to identify, supply or recommend potential respondents.

What screener questions were used in selection of respondents?

We said

Thank you for your request. Find attached a copy of the of the documents you have requested.

1. Please send a copy of the full methodological design and cognitive testing findings of the research study described as 2020:6 in Section 3.2 of EAP148 - Methodology for decision making on the 2021 Census sex question concept and associated guidance

Please note that this is a draft summary of the findings, not intended for publication in this form, but instead to inform the final public report that was published. It is not intended to be considered in isolation, but as part of the development process.

To expand on this methodology, please see:

2. Please provide details of how respondents were recruited for the study. Were any external organisation or agencies used to identify, supply or recommend potential respondents? What screener questions were used in selection of respondents?

We recruited trans allies, trans and women's groups through a professional paid research participant agency (People for Research).

Attachment 3 relates to their screener questions:

We recruited cisgender participants from our in-house participant database which is managed by the Qualitative and Data Collection Methods Expert Group, ONS.

Attachment 4 relates to screener questions for cisgender participants:

Personal data of those who are Senior Executive Office (SEO) level and below have been redacted in accordance with Section 40 (2) of the Freedom of Information Act 2000 (FOIA).