Democratic peace theory — why democracies rarely fight each other and how regime type, economic interdependence, and international organizations jointly reduce militarized interstate disputes. Built on Doyle (1986), Maoz & Russett (1993), Oneal & Russett (1999), and Gartzke (2007).
Study of why democracies rarely fight each other and how regime type, trade interdependence, and IGO membership jointly reduce interstate conflict probability.
dyadic_democracy
Dyadic Democracy ScoreThe Polity IV score of the less democratic state in a dyad. Captures the binding constraint: a dyad is only jointly democratic if both members clear the threshold.
militarized_interstate_dispute
Militarized Interstate Dispute OnsetBinary indicator: 1 if a dyad experienced MID onset in a given year, per the COW MID dataset.
trade_interdependence
Bilateral Trade InterdependenceThe lower of the two states' ratios of bilateral trade to GDP, capturing the dyadic member with least to gain from trade continuity.
shared_igo_membership
Shared IGO MembershipsCount of intergovernmental organizations to which both states belong simultaneously.
territorial_contiguity
Territorial ContiguityBinary indicator of whether two states share a land border or narrow sea corridor. Standard opportunity control.
capability_ratio
Dyadic Capability RatioRatio of the stronger state's CINC score to the sum of both states' CINC scores, capturing power asymmetry.
Domain: Democratic Peace
Study of why democracies rarely fight each other and how regime type, trade interdependence, and IGO membership jointly reduce interstate conflict probability.
Temporal scope: 1885-present | Population: Directed and non-directed dyad-year observations of sovereign state pairs
Install this PAX into your Praxis instance:
praxis_import_pax("democratic-peace.pax.tar.gz", install=True)