Significant Temperature Change
1 = No Temperature Change
2 = Temperature Change

Existing Data Source
1 = IBSS
2 = Seshat
3 = ARO

Political Integration
0 = Autonomous local communities
1 = 1 level above community
2 = 2 levels above community
3 = 3 or more levels above community

Change in Population or Migration
1 = Dramatic decrease
2 = Decrease
3 = Stable
4 = Increase
5 = Dramatic Increase

Change in Village Organization
1 = Community organization collapses
2 = Size/complexity of community decreases
3 = Size/complexity of community is stable
4 = Size/complexity of community increases
5 = Radical increase in the size and/or organizational complexity of communities"
88 = Conflicting information
99 = Missing

Change in Regional Organization
1 = Regional organization collapses
2 = Size/complexity of regional organization decreases
3 = Size/complexity of regional organization is stable
4 = Size/complexity of regional organization increases
5 = Radical increase in the size and/or organizational complexity of the regional system
88 = Conflicting information
99 = Missing

Change in Ritual Architecture and Organization
1 = Ritual system collapses
2 = Size/complexity of ritual decreases
3 = Size/complexity of ritual is stable
4 = Size/complexity of ritual increases
5 = Radical increase in the size and/or complexity of ritual
88 = Conflicting information
99 = Missing

DV_1 Recoded
1 = None
2 = Some
3 = Much