Community norms in waste management: what can we learn from an Indian study?

Almost everyone knows that plastic harms the environment, yet the rubbish heap at the edge of the village keeps smouldering. This contradiction is not unique to any one country. A new study from India set out to find what really decides whether a household handles its plastic waste responsibly, and the answer is strikingly clear: community norms in waste management carry more weight than personal conviction or how accessible people feel collection points are. In a paper published in Environmental and Sustainability Indicators in September 2026, Prabhakar Sharma and Gyanendra Nath Tiwari of Nagaland University analysed survey responses from 226 residents, 131 open-ended answers and ten in-depth interviews.

In short: Community norms in waste management are more closely linked to actual practice than environmental awareness, perceived opportunities or views on enforcement – this is the finding of a mixed-methods study carried out in Nagaland, in north-eastern India. Residents almost unanimously consider plastic harmful, but their behaviour is shaped above all by what they see and what is expected of them in their community.

Nagaland: hills, tribal communities and ever more plastic

Nagaland is a hilly state in the north-east of India whose tribal communities traditionally lived in harmony with nature, producing little waste and relying on biodegradable materials. Recent development has upset that balance: single-use plastic arrived along with packaged consumer goods, and plastic waste is now plainly visible in urban areas.

The terrain alone makes collection, sorting and recycling difficult, and with limited resources and patchy infrastructure, open dumping and burning have become common practice. The study’s own photographs document this: sacks tipped onto hillsides, slopes covered in blue sheeting and burning piles of plastic near the survey sites.

One feature makes Nagaland a particularly interesting setting for behavioural research. Community life is strongly shaped by tribal institutions – village councils, religious organisations and youth groups. These have long passed on values of cleanliness, shared responsibility and respect for nature, but such norms have so far failed to keep pace with the flood of plastic. The study covered three districts – Kohima, Dimapur and Chümoukedima – including urban, semi-urban and rural residents.

What did the researchers examine?

The study is built on one of the best-known models in social psychology, Icek Ajzen’s Theory of Planned Behaviour. It holds that behaviour is shaped by three factors: attitude (what I think about the issue), subjective norms (what others expect of me and what people around me do), and perceived behavioural control (how easy or difficult I feel the action is). The researchers extended this framework with cultural values and perceptions of policy and enforcement.

The questionnaire contained 40 statements rated on a five-point scale. Of the 226 respondents, 91 live in urban, 82 in semi-urban and 53 in rural areas. Data were collected face to face between June and December 2025. The survey ended with two open questions: what stops people from disposing of plastic waste properly, and what ideas they have for improving the situation. Ten semi-structured interviews with a separate group added depth; the two authors coded them independently, with high agreement.

Subjective norms were measured with statements such as “my neighbours dispose of plastic waste responsibly”, “waste segregation is a common practice in my locality” or “friends motivate me to manage plastic waste better”. Behaviour was captured by a nine-item composite covering, for example, using cloth or jute bags, taking part in community clean-ups and using designated collection points.

Your neighbours matter more than your convictions

Awareness is not the problem. The strongest agreement went to the statement that plastic waste is harmful to the environment (4.77 on a 5-point scale), and respondents also saw reducing plastic use as necessary (4.58) and felt responsible for their own waste (4.38). Across the full questionnaire, attitudes towards sustainable practices were moderately positive.

The key question, however, was which of these factors actually goes hand in hand with behaviour. The final hierarchical regression model explained 44.5 percent of the variance in self-reported behaviour – a strong result for social science research. The weight of each factor:

• subjective norms were by far the strongest predictor (standardised beta: 0.485),
• followed by cultural values (0.251),
• then attitude (0.186),
• while perceived behavioural control added no independent explanatory power (–0.023, not significant),
• and perceptions of policy and enforcement did not improve the model either.

On its own, perceived behavioural control showed a weak but measurable link with behaviour, yet that link disappeared entirely once the model accounted for subjective norms. In other words, what first looked like a matter of individual opportunity was in fact moving together with community expectations.

It is also telling which norm statement scored lowest: feeling pressured by friends or family (2.69). The figures suggest that nagging is not what works – what works is whatever counts as normal in the neighbourhood. The researchers’ exploratory factor analysis showed that some cultural value items – for instance whether community events discourage plastic, or whether elders share their knowledge of waste management – loaded on the same factor as the statements describing neighbours’ and the locality’s practice.

This echoes European experience. In our article on the WRAP Cymru research, an expert explained the weakness of recycling away from home precisely by pointing out that at home the neighbours can see what we put out, and this mild social pressure is missing at work or at a festival.

Where the numbers and the testimonies disagree

The study’s most interesting finding is a contradiction. Statements about infrastructure received the lowest scores: respondents say there are few convenient collection points nearby, and plastic-free alternatives are too expensive or unavailable. In the open-ended answers and interviews, poor infrastructure was the second most frequently cited barrier, and in the interviews it emerged as the most serious challenge of all. Yet in the statistical model it did not explain behaviour.

According to the authors, this is not an error but a lesson. Infrastructure may act not directly, as an individual obstacle, but through the kind of community norms that can form in the first place. From a practitioner’s perspective this makes perfect sense: where there is no collection point, nobody sees their neighbour separating waste, so good practice cannot become the norm. The present single-wave survey could not test this pathway directly, so the researchers recommend longitudinal studies.

The picture is similar for enforcement. Residents see enforcement of the plastic ban as weak (2.85) and have little faith in the government’s efficiency in managing plastic waste (2.88), yet these views were not linked to how they handle their own waste.

Barriers and solutions in residents’ own words

In the open-ended answers and interviews, residents named what prevents proper waste handling. Share of mentions in open-ended survey responses and in interviews, respectively:

• lack of awareness and education: 67 and 80 percent,
• inadequate infrastructure and few collection points: 58 and 70 percent,
• weak enforcement and policy gaps: 32 and 50 percent,
• convenience, laziness and the hassle of sorting: 28 and 40 percent,
• lack of civic sense and personal responsibility: 24 and 30 percent,
• ingrained habits such as dumping and burning: 19 and 20 percent,
• limited alternatives and incentives: 14 and 10 percent.

At first glance it seems odd that lack of awareness topped the list when nearly everyone knows plastic is harmful. The authors argue that awareness has several layers: general, moral awareness is high, but practical, procedural knowledge – what goes where, and how – is uneven. As one interviewee put it: “We consider all waste as equal, they belong in the trash bin.” The interviews also showed that while traditional cleanliness norms exist, no tradition addresses plastic specifically.

This adds nuance to the University of Hohenheim experiment we covered earlier: in Stuttgart, explaining the reasons behind waste sorting cut household sorting errors by around 70 percent. There, the collection system was already in place and what people lacked was motivation. In Nagaland the “why” is already understood; what is missing is the “how” and the “where”.

The proposed solutions, in order:

• awareness and education campaigns: 72 and 90 percent,
• more collection points and better infrastructure: 53 and 70 percent,
• consistent enforcement of rules, including fines: 38 and 60 percent,
• promoting reduce, reuse, recycle (3R) and alternatives: 33 and 40 percent,
• community participation and clean-up drives: 28 and 50 percent,
• government and institutional support: 26 and 40 percent,
• incentives and rewards, such as buy-back schemes: 18 and 20 percent.

The interviews also surfaced a positive example: local young people took the initiative to make their own bins and organised community clean-up days.

How strong is the evidence?

To their credit, the authors are open about the study’s limitations, and these deserve to be taken seriously. All data are self-reported, and no one checked the answers against actual practice. Statements about “personal responsibility” are particularly prone to respondents giving socially desirable answers. In our article on the ÖSTERREICH SAMMELT surveys, a behavioural psychologist made the same point: there is a strong social expectation around waste sorting, which colours self-reported answers – and the same research found a marked generational gap in sorting routines.

This matters because the Nagaland sample is young and predominantly male: roughly half of respondents are under 25, and most are students. The measurement of attitudes and cultural values is also statistically weak, and cultural values are hard to separate from subjective norms. The authors therefore treat cultural values as a correlate rather than an independent cause. The survey was conducted at a single point in time, so it does not permit causal conclusions, and the model cannot capture habitual, automatic actions – even though throwing something away is a textbook example of one. According to the authors, the central finding – the decisive role of subjective norms – is the most robustly supported result.

What do community norms in waste management mean for Europe?

Hungary and the rest of Europe are not Nagaland, but the lesson travels. The gap between awareness and practice is familiar here too. According to Hungary’s Ministry for the Living Environment, more than 12,750 tonnes of illegal waste has been removed from Hungarian forests since 2020, and the ministry itself noted a sharp contradiction between society’s growing sensitivity to nature and some citizens’ everyday environmentally harmful behaviour.

The Nagaland findings point to several practical conclusions for waste managers, local authorities and civil society organisations:

• Make good practice visible. If what the neighbours do is what counts, it pays to show how many people separate their waste in a street, a block of flats or a town. “Everyone else does it” is a stronger message than a warning.
• The credible messenger is the local community. In Nagaland, village councils, religious organisations and youth groups are the key players. In Europe, schools, neighbourhood watch groups, sports clubs, parishes or an active local Facebook group can play the same role.
• Infrastructure is a precondition for norms. A collection point alone does not change behaviour, but without one no community practice can emerge. Sometimes a single institutional decision achieves more than a campaign: through plastic-free public procurement, Lyon banished disposable plastic from its official catering.
• Make campaigns practical. That plastic is harmful is already a truism. Campaigns need to explain what goes where, what happens to it and why it matters – otherwise the “all waste is the same” mindset persists.
• Enforcement does not replace norms. In Nagaland, perceptions of weak enforcement were not linked to behaviour. Fines are an important tool for serious cases, but everyday practice is sustained by the community.

Ultimately, the message of the Nagaland study is simple: waste handling is not a private matter, and community norms in waste management are at work even where nobody is paying attention to them. If responsible practice is normal around us, we follow it; if a rubbish heap is the familiar sight, even the best intentions fall short.

---

FAQ: community norms in waste management

What did the Nagaland waste management study examine?

The study examined which factors are linked to responsible plastic waste handling in the Indian state of Nagaland. Two Nagaland University researchers analysed survey responses from 226 urban, semi-urban and rural residents, 131 open-ended answers and ten in-depth interviews, using the Theory of Planned Behaviour extended with cultural values and perceptions of enforcement.

Which factor had the strongest influence on plastic waste handling?

Subjective norms – what people around us do and expect of us – had the strongest influence. The final model explained 44.5 percent of self-reported behaviour, with subjective norms carrying the greatest weight, followed by cultural values and attitude. Perceived behavioural control and views on enforcement added no independent explanatory power.

Why did infrastructure not explain behaviour if residents complain about it?

The authors suggest infrastructure probably acts indirectly, by shaping which community norms can form. Where there is no collection point, nobody sees their neighbours separating waste, so good practice cannot become the norm. The single-wave survey could not confirm this pathway, so the researchers recommend longitudinal studies to test it.

What barriers did residents of Nagaland identify?

The most frequently cited barrier was lack of awareness and education, mentioned in 67 percent of open-ended survey answers and 80 percent of interviews. It was followed by inadequate infrastructure, weak enforcement, convenience, lack of civic sense, ingrained habits of dumping and burning, and finally limited alternatives and incentives.

How far can the study’s findings be generalised?

Only with caution. All data are self-reported, the sample is young and predominantly male, the measures of attitude and cultural values are statistically weak, and the survey was conducted at a single point in time, so it does not allow causal conclusions. According to the authors, the best-supported result is the decisive role of subjective norms.

---

🔗 Official sources and references: 👉

• Sharma, P., Tiwari, G. N. (2026): Psychosocial, cultural, and structural determinants of plastic waste management practices in Nagaland, India: A mixed-methods study using the theory of planned behaviour. Environmental and Sustainability Indicators, 32, 101539. The study on ScienceDirect (DOI: 10.1016/j.indic.2026.101539) (open access, CC BY 4.0 licence)

Consistent structure, quick answers: every article is built so that both readers and AI search tools can find the key points easily. Our content is produced with the help of AI tools and reviewed by our editor.