Bipolar disorder can change how thoughts are processed during a mood episode. Thinking may become faster or slower, unusually certain or strongly self-critical, while judgment, attention, memory, and perception can also shift.
If you live with bipolar disorder, you may know how strange it is for a thought to feel completely convincing in one moment, then look very different days or weeks later. Partners and family members can find that shift difficult to understand too.
These changes aren’t identical for everyone, and they can look very different depending on the mood state someone is experiencing.
How thinking changes across bipolar mood states
Bipolar disorder can affect thinking differently across mania, depression, and mixed states. Mania may bring racing thoughts, unusually high confidence, and weaker risk perception. Depression tends to slow thinking and pull it toward guilt, hopelessness, or self-criticism. Mixed states can bring features of both into the same period.
Mania and hypomania
During mania, thoughts can move very quickly. Diagnostic criteria include racing thoughts and “flight of ideas”, where one thought rapidly leads into another.
Confidence can rise sharply too. Someone may feel unusually capable, important, talented, or powerful. In more severe episodes, that can develop into grandiosity.
Judgment can shift at the same time. Mania is associated with greater risk-taking and difficulty weighing consequences, which may show up as impulsive spending, sexual risk-taking, or major decisions made with unusual certainty.
Attention and memory can also suffer during manic episodes. Neuropsychological studies have found difficulties with attention, verbal memory, and other cognitive functions, some of which may continue for a period after the episode settles.
Hypomania involves similar changes at a lower level of severity. It lasts at least 4 days, and reality testing remains intact. If psychosis occurs, the episode is classified as mania rather than hypomania.
Talking out loud to yourself isn’t part of the diagnostic criteria for bipolar disorder. Some people do describe it when racing thoughts become difficult to organise internally, but it shouldn’t be treated as a defining symptom.
Depression
Bipolar depression often slows thinking and pulls attention toward guilt, hopelessness, or self-criticism.
Concentrating can become harder. Decisions that would normally feel simple may take far more effort. Some people speak more slowly, struggle to remember things, or feel mentally foggy.
Research has linked bipolar depressive episodes particularly with verbal-memory difficulties. A 2014 study of cognitive distortion also found an association between childhood adversity and higher cognitive-distortion scores during bipolar depression.
Negative conclusions can feel unusually convincing in that state. When thinking becomes this slowed or self-critical, knowing what can help during a depressive episode can be more useful than expecting yourself to reason your way out of the mood.
Mixed states
A mixed state contains symptoms from opposite mood poles during the same period.
Someone may have racing thoughts, increased energy, or agitation while also experiencing hopelessness, guilt, or thoughts of death. The combination can feel particularly distressing because increased drive and severe emotional pain can exist together.
The DSM-5 uses the specifier “with mixed features” when a person meets criteria for one mood episode while also showing several symptoms associated with the opposite mood state.
Why can bipolar thoughts feel completely true?
Emotional reasoning helps explain part of this experience. A feeling can start functioning like evidence, so “I feel hopeless” becomes “my life is hopeless,” or unusually high confidence becomes proof that a risky decision is certain to work.
Insight matters too. Insight is the ability to recognise, in real time, that a mood state may be changing your judgment. Research across bipolar mood states has found the greatest reductions in insight during mania and mixed states, with better insight during depression and periods of stability.
During mania, a thought can feel true while the ability to question it is itself reduced. During depression, the conviction may come from a different route, with slowed thinking, self-criticism, and emotional reasoning reinforcing the same conclusion.
Strong emotional states can shape how a situation is interpreted even outside bipolar disorder. When emotional intensity becomes difficult to interrupt, the feeling itself can start steering the story a person tells themselves about what is happening.
Some patterns have a strong clinical connection with bipolar disorder. Others are commonly discussed online but have weaker evidence.
Grandiose thinking
Grandiosity is a recognised feature of mania and hypomania.
It can involve unusually high self-esteem, feeling exceptionally talented or powerful, or believing ordinary limits no longer apply. In severe mania, grandiosity can become delusional.
Delusional thinking and psychosis
Psychotic symptoms are most relevant to bipolar I disorder.
A 2022 systematic review and meta-analysis covering more than 23,000 people found lifetime psychotic symptoms in 63% of people with bipolar I and 22% of people with bipolar II.
The content can follow the mood state. Mania may involve grandiose or persecutory beliefs, while depression can involve delusions centred on guilt, failure, or poverty.
Hypomania doesn’t include psychotic features. The presence of psychosis changes the clinical classification to mania.
Disorganised thinking
At the severe end of mania or mixed episodes, thoughts can become difficult for other people to follow.
Ideas may move so rapidly that speech becomes fragmented or loses a clear connection between topics. This is more likely when an episode is severe or includes psychotic symptoms.
Many people with bipolar disorder never experience this degree of thought disturbance.
Black-and-white thinking
Black-and-white thinking is frequently associated with bipolar disorder online, but the research is less clear.
It has a stronger established association with borderline personality disorder. Bipolar research has identified a narrower pattern called extreme positive overgeneralization, where one success leads to unusually broad conclusions about the self or future.
That pattern has been associated with mania risk, but it isn’t the same as a general tendency to see everything as all good or all bad.
Common misconceptions about how people with bipolar think
“Bipolar means having different personalities”
Bipolar disorder involves changes in mood, energy, judgment, and behaviour across episodes. It doesn’t create separate personalities.
Someone may behave very differently during mania and depression while remaining the same person.
“Medication makes all of the thinking problems disappear”
Medication is mainly used to reduce the frequency and severity of mood episodes.
Its direct effects on cognitive difficulties such as attention and memory are more complicated. Research findings remain mixed.
Antidepressants also need careful management in bipolar disorder because an SSRI or SNRI used without a mood stabiliser can trigger or worsen manic, hypomanic, or mixed symptoms in some people.
“They can just turn it off”
Insight can genuinely decrease during mania and mixed states.
Someone may understand what they’re doing while having less ability to recognise how much the episode is influencing their judgment.
“They don’t remember what they did”
Complete memory loss isn’t typical.
Research suggests people with bipolar I can often recall past manic episodes during periods of stability, sometimes years later. Memory and attention can still be impaired during episodes, which may leave parts of the experience less clear.
After mania, embarrassment or low mood can also affect how someone looks back on what happened.
“What they said during an episode is who they really are”
Mood episodes can substantially change judgment, emotional intensity, confidence, and insight.
A person may later struggle to make sense of things they believed or did while symptomatic. A 2024 qualitative study of adults with stable bipolar disorder found that people themselves can wrestle with whether an episode felt like part of who they were or something that happened to them.
Episode behaviour needs to be understood in the context of the symptoms present at the time.
How bipolar thinking can affect relationships
Mood episodes can change how someone reads a partner’s words, intentions, or reactions. The same conversation may feel very different to each person while symptoms are active.
A 2025 study of 111 people with bipolar disorder and 74 partners found that partners reported lower relationship satisfaction than the person with bipolar disorder, with both groups scoring below general-population norms.
Changes in social cognition may play a role. Research suggests some people with bipolar disorder have more difficulty recognising emotions or interpreting another person’s perspective, even during periods of mood stability. A partner’s silence, tone, or small comment can therefore carry more meaning than was intended.
After an episode, improved insight can bring embarrassment, guilt, or confusion about what happened. If parts of the episode also feel unclear, memory gaps during bipolar episodes can make those conversations harder.
Stable relationships are still possible. Treatment, clear communication, and a shared plan for recognising early warning signs can help couples revisit difficult events once the mood state has settled.
What support can change
Genetic studies have found an association between bipolar polygenic risk and working in creative professions. Research involving people with a diagnosed bipolar disorder has produced a less consistent picture.
A systematic review using objective creativity measures found no consistent creativity advantage over people without a psychiatric diagnosis.
The more practical goal is better insight into personal patterns before they escalate. That work can involve recognising early changes in sleep, thought speed, confidence, irritability, spending, withdrawal, or self-criticism, then having a plan for what happens next.
For someone who needs concentrated, private support, RósGlas Recovery provides individualised mental health treatment for one client at a time in a private five-star residence in rural Ireland. A live-in therapist and multidisciplinary clinical team work with that person throughout the stay, without shared programmes or group sessions.
If this sounds like the depth of support you or someone you love is looking for, you can reach out in confidence for a confidential conversation about what that could look like.
Frequently asked questions
Is black-and-white thinking a symptom of bipolar disorder?
Black-and-white thinking has a much stronger research association with borderline personality disorder than with bipolar disorder. A narrower pattern, extreme positive overgeneralization after success, has been associated with mania risk.
Do people with bipolar know what they’re doing during an episode?
Insight is often reduced during mania and mixed states. A person may understand what they are doing in a literal sense while having less ability to recognise how much the mood state is changing their judgment.
Do people with bipolar feel remorse or learn from their mistakes?
Often, yes. Once insight returns, shame and self-criticism can become intense. Research on self-stigma in bipolar disorder has linked those experiences with lower self-esteem and poorer functioning.
Can medication change how someone with bipolar thinks?
Medication can improve thinking indirectly by reducing the frequency and severity of mood episodes. Evidence for direct cognitive effects on memory, attention, or processing speed remains mixed.
Why do people with bipolar sometimes talk to themselves, especially when manic?
Talking to yourself falls outside the formal diagnostic criteria. Some people describe it when racing thoughts become difficult to organise silently, though it should not be treated as a defining bipolar symptom.
What’s the difference between how someone with bipolar I and bipolar II thinks?
The clearest clinical dividing line is full mania. Bipolar I requires at least 1 manic episode, and mania can include psychotic symptoms. Bipolar II involves hypomania and major depressive episodes, with psychosis excluded from hypomania by definition.
What shouldn’t you say to someone with bipolar?
Avoid treating episode behaviour as proof of the person’s true character. During an active episode, judgment and insight may be altered, and accusatory language can deepen shame without helping either person understand what happened.
Can people with bipolar have successful, stable relationships?
Yes. Partners may sometimes read the same event differently, particularly around an episode. Treatment, communication, and a shared plan for early warning signs can make those differences easier to work through.
When is professional support worth considering?
Professional support becomes especially useful when racing or slowed thinking, guilt cycles, repeated relationship strain, risky decisions, or changes in insight keep returning or become difficult to manage safely.
References
- Aminoff, S. R., Onyeka, I. N., Ødegaard, M., et al. (2022). Lifetime and point prevalence of psychotic symptoms in adults with bipolar disorders: a systematic review and meta-analysis. Psychological Medicine, 52(13), 2413–2425. Link
- Andreasen, L. H., et al. (2025). Relationship and sexual satisfaction among patients with bipolar disorder and partners. Sexual Medicine, 13(3). Link
- Cleveland Clinic. Mania (Manic Episodes). Link
- Cleveland Clinic. Differences Between Bipolar 1 vs. Bipolar 2 Disorder. Link
- Cruz, T. N. D., Camelo, E. V., Nardi, A. E., & Cheniaux, E. (2022). Creativity in bipolar disorder: a systematic review. Trends in Psychiatry and Psychotherapy. Link
- Mayo Clinic. Bipolar disorder: Symptoms and causes. Link
- National Institute of Mental Health. Bipolar Disorder. Link
- StatPearls / NCBI Bookshelf. Bipolar Disorder. Link
- The American Journal of Psychiatry. (2014). Antidepressants in bipolar I disorder: never as monotherapy. Link
