What Moral Development Research Tells Us About Why Democracy Feels Broken

What Moral Development Research Tells Us About Why Democracy Feels Broken

So, here's something that's been on my mind, and if you've watched the news at any point in the last few years, it's probably been on yours too. Democracies feel broken in a way they didn't a decade ago. People treat political opponents as enemies rather than fellow citizens. Trust in institutions keeps falling. Even basic shared expectations, like accepting election results or agreeing on factual reality, can't be taken for granted anymore.

The usual explanations point to social media algorithms, economic inequality, geographic sorting, or institutional decline. Those explanations are real and they matter. But there's a piece of this puzzle that almost nobody talks about anymore, and after spending time with the research, I'm convinced it deserves more attention than it gets. The piece is moral development, specifically the work of Lawrence Kohlberg and the five decades of empirical research that have followed it.

Quick Refresher on Kohlberg

Most people encountered Kohlberg in graduate school and then promptly forgot the details. Here's the short version of what matters.

Kohlberg argued that moral reasoning develops through a fixed sequence of stages organized into three levels. Pre-conventional reasoning is the most basic, where right and wrong come down to avoiding punishment or getting what you want. Conventional reasoning, which is where most adults land, organizes morality around group norms, social approval, and respect for established authority and rules. Post-conventional reasoning, the most developed level, evaluates laws and social systems against principles like justice, human dignity, and equal rights. A post-conventional thinker can recognize when a law is unjust, when authority overreaches, or when loyalty to their group would require violating something more fundamental.

The big distinction comes down to where moral authority lives. Conventional reasoners look outward to their group, their leaders, their rules. Post-conventional reasoners can step back and evaluate those same groups, leaders, and rules against principles that sit above any particular tribe.

What the Research Actually Shows

This is where it gets interesting. The Defining Issues Test, developed by James Rest, has been administered to hundreds of thousands of people over multiple decades. It produces a P-score representing the percentage of moral reasoning attributable to post-conventional considerations.

The findings are pretty striking. The largest longitudinal study, conducted by Colby, Kohlberg, Gibbs, and Lieberman, followed participants for twenty years. By age twenty-six, only about fifteen percent had reached post-conventional levels. The majority stayed at Stage 4, oriented toward maintaining social order and respecting authority. More recent DIT research with over 73,000 participants suggests post-conventional reasoning ranges from twenty-nine percent among vocational and technical respondents to forty-two percent among professional-degree holders. International studies show even lower rates, with a 2022 Mexican study finding only twenty-one percent at post-conventional levels overall, dropping to about five percent among participants without professional degrees.

Education turns out to be the strongest predictor of post-conventional development, accounting for thirty to fifty percent of the variance. Rest found that DIT scores kept climbing for people who attended college and stayed flat for those who didn't, even after controlling for age.

So depending on the population, somewhere between most and the vast majority of adults are doing their moral reasoning at conventional levels. They're prioritizing group loyalty, deference to authority, and preservation of the existing order. And they're doing this not because they're lazy or stupid, but because that's where developmental research suggests most people actually land.

Why This Matters for Democracy

Here's where the rubber meets the road. Democracy makes assumptions about its citizens that don't really hold up if most of them are reasoning at conventional levels.

Consider polarization. From a moral development perspective, polarization is exactly what you'd predict from a population reasoning primarily at Stages 3 and 4. Stage 3 prioritizes conformity to one's reference group, which translates pretty directly into adopting the positions of one's political tribe and treating those positions as obviously correct because that's what good people like us believe. Stage 4 extends this to broader social systems, framing party loyalty as a duty.

Neither stage gives you the cognitive tools to recognize that political opponents might have legitimate concerns, or that your own side might be wrong, or that democratic norms matter more than winning. Conventional reasoners don't have an anchor that lets them put democratic integrity above tribal victory. Post-conventional reasoners do, because they evaluate political systems against principles that sit above any group's interests.

This isn't speculative. Van Ijzendoorn found in 1989 that moral judgment level was negatively correlated with both authoritarianism and ethnocentrism. Higher developmental levels meant less rigid in-group preference, less unquestioning deference to authority, and less hostility toward out-groups. More recent work by Mudrack and Mason, and by Bostyn and colleagues, has confirmed similar relationships between lower developmental levels and greater susceptibility to authoritarian and Machiavellian appeals.

What This Says About Authoritarian Movements

The rise of authoritarian movements across multiple democracies starts to make a lot more sense through this lens. Authoritarian leaders tend to appeal directly to Stage 4 concerns, including restoring order, respecting traditional authority, punishing rule-breakers, and protecting the in-group from threatening outsiders. For someone reasoning at the conventional level, those promises don't sound dangerous. They sound morally necessary.

Post-conventional reasoners resist these appeals not because they're more politically sophisticated but because they evaluate leaders against principles rather than against position. They can distinguish between legitimate concern for social order and authoritarian overreach. They recognize that strong leaders who promise to restore order by circumventing institutional constraints are threatening the foundations of democratic governance, even when those leaders are on their own political side.

Worth noting, research by Fishkin and colleagues, and more recently by Emler and colleagues, has found self-identified liberals more likely to engage in post-conventional reasoning while conservatives more often use conventional reasoning. The distributions overlap substantially, so this isn't a clean ideological divide. The point isn't that one side reasons better. It's that certain political messages resonate more strongly at certain developmental levels, and appeals to group loyalty, traditional authority, and maintenance of order will land harder with conventional reasoners regardless of which group is doing the appealing.

The Education Question

If post-conventional development matters for democracy, and education is the strongest predictor of post-conventional development, then access to higher education is a democratic concern, not just an economic one.

Schlaefli, Rest, and Thoma's meta-analysis of intervention studies found that programs emphasizing engagement with moral dilemmas and exposure to competing perspectives produced significant gains in moral reasoning. Mere instruction was less effective than active engagement. This suggests that what higher education contributes isn't just information but exposure to diverse viewpoints, requirements to defend positions, and communities that value critical inquiry over conformity.

When higher education becomes inaccessible, vocationally narrow, or politically constrained, the developmental consequences extend beyond individual students to the broader democratic environment. Soaring tuition costs, restrictions on programs that engage with competing viewpoints, and pressure to limit difficult discussions all reduce the pathways through which post-conventional development typically occurs. The result is a stratified system where access to moral development tracks existing socioeconomic advantages, which entrenches conventional reasoning in exactly the communities that already have the fewest pathways out of it.

Some Honest Limitations

I want to be careful here. Kohlberg's framework has real critics. Carol Gilligan argued that the original stage sequence reflected a masculine emphasis on abstract justice while neglecting an orientation toward care and relationships. Subsequent meta-analyses by Walker and by Jaffee and Hyde found minimal gender differences when education and occupation were controlled, but Gilligan's broader point about moral orientation stuck and contributed to the field. Cross-cultural critiques raised similar concerns, with Snarey and others noting that post-conventional reasoning as Kohlberg defined it appears rare outside Western contexts. More recent work by Gibbs and colleagues found more cross-cultural support than earlier critics suggested, while still acknowledging that cultural context shapes how stages are expressed.

There's also the gap between moral reasoning and moral behavior. Blasi raised serious questions about whether cognitive development alone explains moral action. The Four Component Model that emerged from this work argued that behavior requires not just reasoning but moral sensitivity, motivation, and character. Reasoning typically explains only about ten percent of the variance in moral behavior, which means the vast majority of what people actually do remains unexplained by stage theory.

Even so, the capacity for advanced reasoning matters. Citizens can't make genuinely informed democratic decisions without the ability to understand and critically evaluate competing moral arguments. You don't need post-conventional reasoning to be a decent person, but you probably do need it to sustain a functioning democracy.

What This Means Going Forward

Stabilizing democracy isn't just a matter of policy or institutional reform. It also requires attention to the moral-cognitive capacities that citizens bring to democratic life.

That points to a few things. Civic education needs to do more than teach how government institutions work. It needs to expose students to genuine moral dilemmas, require engagement with competing perspectives, and build the capacity for critical thinking about civic issues. Access to quality higher education matters not just for individual mobility but for democratic health, which makes the move toward low-cost or tuition-free public higher education a democratic question rather than purely an economic one.

It also suggests a different way of thinking about political opponents. Treating people who reason conventionally as stupid or evil isn't accurate, and it doesn't work. They're operating from a different cognitive framework, and recognizing that opens up communication strategies that pure moral condemnation forecloses. Finally, it places real obligations on leaders. Politicians who exploit conventional reasoning through tribalism and authoritarian appeals are damaging democratic foundations even when they're winning elections, while leaders who model post-conventional reasoning contribute to long-term democratic health regardless of their immediate political success.

The Bottom Line

None of this is a complete explanation. Social media, economic inequality, institutional decline, and geographic sorting all matter. But these factors operate on populations with particular moral-cognitive characteristics, and a population reasoning at post-conventional levels would respond to the same pressures very differently than one reasoning at conventional levels.

Kohlberg himself believed that Stage 5 reasoning provided the cognitive foundation for constitutional democracy. The empirical evidence suggests that relatively few citizens actually reason at that level. The consequences are visible right now in polarization that treats opponents as enemies, in authoritarian movements that promise order through strong leadership, and in the inability to address collective challenges that require getting beyond tribal loyalties.

Whether democratic societies can do anything about this is an open question. But structural reforms alone aren't going to be enough if we're not also paying attention to how citizens actually reason about moral and political questions. That's a longer project than any election cycle, and it doesn't lend itself to slogans, but it might be the work that matters most.