- Student: currently enrolled in an institution
- Recent Graduate/Post Doc: recent graduate is five years post PhD or highest equivalent terminal degree
- Early Career: within 10 years of receiving their PhD or highest equivalent terminal degree
- Middle Career: within 20 years of receiving their PhD or highest equivalent terminal degree
- Senior Scientist: experienced and sustained career; established leader in their field
- Group/Team: two or more individuals
- Developing Nations: based on World Bank countries identified as low and middle income. Note: The World Bank definition is based on GNI (Gross National Income).