Research
Research overview
Psychology news comes out all the time: one day a "happiness hormone" has been found, the next a certain habit is said to make people unhappy. Many of these stories retell real studies but lose important caveats along the way. This section helps you read them calmly and critically.
Good research usually speaks with caution. The louder the headline, the more questions are worth asking before you change anything in your life.
Survey, observation and experiment
| Type of study | How it is done | What it can tell us |
|---|---|---|
| Survey | People answer questions about their own feelings and habits | How people rate their own state, but not why it is that way |
| Observation | Groups of people are compared and followed over time | Whether two things are linked, but not necessarily the cause |
| Experiment | Participants are randomly split into groups and the outcomes compared | Whether a specific intervention has an effect under set conditions |
| Review of many studies | Results of different studies on one topic are compared | The most balanced picture available today |
How to read a "scientists have proven" headline
Find out which study it is about
Does it say who did the research and where? If you can't find the original source, treat the story with caution.
Look at the number of participants
A conclusion drawn from a small group may turn out to be chance. Large, long-running studies have fewer chance coincidences.
Tell a survey from an experiment
When people report on themselves, that is valuable information, but not proof of a cause. A link between two things may be explained by something else entirely.
Find out who funded it
A study paid for by someone who sells a course or service is not necessarily wrong, but its conclusions need independent checking.
Check who the conclusion is about
A result obtained from students at one university or from animals cannot be directly applied to any person.
Compare with professional organizations
If a story contradicts WHO recommendations and the views of doctors, it is wiser to wait until it is confirmed.
Phrases worth double-checking
- "Scientists have proven": often this is about one small study
- "A simple way to get rid of anxiety forever": no such way exists
- "This personality type is doomed": studies describe groups, not the fate of an individual
- "The cause of depression has been found": complex conditions usually have many causes
- "This method works for everyone": people respond to help in different ways
Related sections
- Sources
What this guide relies on, why it contains so few numbers, and how to check advice about mental health on your own.
- Quick-fix claims (in Russian)
Archived page: signs of dubious promises of quick personal change and how to check them.
- Glossary
Words from conversations about mental health in plain language, from stress and anxiety to sleep hygiene and helplines.
- Topics
Topics by group: stress and tension, sleep and rest, anxious thoughts, professional help, checking claims; plus the article catalogue.
Sources
- WHO: Depression fact sheet
This guide draws on the WHO guidelines on physical activity, the WHO fact sheet on depression and the recommendations on sleep duration for adults as they were available at the time of writing. Recommendations are refined over time, so questions about your own health are best discussed with a doctor.