Centre for Longitudinal Studies

Documentation

Here you will find all the documentation for our studies. This includes survey questionnaires, interviewer instructions, showcards, technical reports, survey reports, and derived variables. For more information, take a look at our guide to the different documentation types.

  • National Child Development Study
  • 1970 British Cohort Study
  • Next Steps
  • Millennium Cohort Study
  • COVID Social Mobility & Opportunities study
  • Growing Up in the 2020s study
  • Growing up in Digital Europe
  • Children of the 2020s study
  • Early Life Cohort Feasibility Study
  • Generation New Era
  • linkage
  • Coding frames
  • Data notes
  • Derived variables
  • Ethical review and consent
  • Laboratory procedures
  • Questionnaires and interviewer instructions
  • Showcards
  • Survey reports
  • Technical reports
  • User guides

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Showcards

BCS70 age 30 – questionnaire introduction

Date published: 1 January 1999

User guides

BCS70 Age 26 Guide to the Data

Guide to the 26 year follow up for BCS70

Date published: 1 May 1996

Questionnaires and interviewer instructions

BCS70 Age 26 Annotated Questionnaire

Annotated version of the questionnaire from BCS Age 26 sweep

Date published: 1 May 1996

Data notes

NCDS An Introduction to the Origins of the Study and the Methods of Data Collection

Author: Peter Shepherd

A background to the NCDS study and the different data collection methods used.

Date published: 1 May 1995

Technical reports

NCDS Age 33 Survey Methodology

Report on NCDS 5th sweep survey

Date published: 1 September 1993

Questionnaires and interviewer instructions

Behaviour Problems Index

Date published: 3 June 1991

User guides

NCDS Age 33 Guide to the Data

User guide to the 5th sweep of NCDS

Date published: 1 May 1991

Questionnaires and interviewer instructions

NCDS Age 33 Cohort Member Interview Questionnaire

Questionnaire for cohort members administered in the Age 33 sweep of NCDS.

Date published: 1 May 1991

Questionnaires and interviewer instructions

NCDS Age 33 Coding Frames for Open-Ended Questions

Coding Frames for Open-ended questions in the 5th sweep of NCDS

Date published: 1 May 1991

Questionnaires and interviewer instructions

NCDS Age 33 Annotated ‘What Do You Think?’ Questionnaire

Annotated version of the “What Do You Think?” questionnaire given to cohort members.

Date published: 1 May 1991