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Before You Know It

Before You Know It

The Unconscious Reasons We Do What We Do
by John A. Bargh 2017 354 pages
4.02
1k+ ratings
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Key Takeaways

1. The Hidden Past Shapes Our Present

The past is never dead. It’s not even past.

Evolutionary Legacy. Our minds are shaped by eons of evolution, imprinting us with basic drives for survival and reproduction. These ancient motivations, often operating unconsciously, influence our modern behaviors, from political attitudes to mate selection. For example:

  • Our fear of danger, a survival mechanism from ancient times, can make us more politically conservative.
  • Our drive to reproduce can lead to unconscious biases, such as favoring attractive individuals in hiring decisions.
  • Our need for physical safety can influence our political attitudes, making us more conservative when we feel threatened.

Unconscious Processing. We often react to the world without conscious awareness, relying on automatic processes honed by evolution. This allows us to navigate complex situations quickly, but it can also lead to biases and misinterpretations. For example, we can detect honesty or dishonesty in others without consciously thinking about it, but we can also be influenced by subtle cues we are not aware of.

Beyond Conscious Control. Much of what we do is driven by these hidden, unconscious forces, which can be unsettling. However, understanding these influences is the first step toward gaining greater control over our thoughts and actions. By acknowledging the power of our hidden past, we can begin to make more informed choices in the present.

2. Early Experiences Wire Our Social Brains

The nature of our bonds with our parents, when we are infants, echoes our evolutionary past.

Attachment Styles. Our early relationships with caregivers shape our ability to trust and form bonds with others throughout our lives. Securely attached individuals tend to have more positive and stable relationships, while insecurely attached individuals may struggle with trust and intimacy. For example:

  • Securely attached children are more socially competent in school.
  • Insecurely attached children have more difficulties in romantic relationships.
  • These patterns are set by the time we are one year old.

Physical and Social Warmth. The association between physical warmth and social warmth is deeply ingrained in our brains. Early experiences of being held and cared for create a link between physical comfort and feelings of trust and security. This is why:

  • Holding a warm cup of coffee can make us feel more socially connected.
  • Being socially rejected can make us feel physically colder.
  • Infant monkeys deprived of physical warmth have difficulty forming social bonds later in life.

Early Childhood Amnesia. We have little to no conscious memory of our early childhood experiences, yet these experiences have a profound and lasting impact on our social and emotional development. This lack of awareness makes it difficult to understand the roots of our current relationship patterns.

3. Culture Unconsciously Programs Our Minds

The culture we live in is like water to a fish: it is all around us and so constant and commonplace that we hardly even notice it.

Cultural Values. Our culture shapes our values, beliefs, and behaviors, often without our conscious awareness. For example, the Protestant work ethic and Puritanical views on sex are deeply ingrained in American culture, influencing our attitudes toward work, morality, and social issues.

  • Americans tend to link hard work with salvation.
  • Americans are more likely to hold traditional values than people in other industrialized countries.
  • These values are often unconsciously activated and influence our judgments and behaviors.

In-Group Bias. We are naturally inclined to favor those who are similar to us, a tendency that can lead to prejudice and discrimination. This bias is often unconscious and can be triggered by even minimal cues, such as a shared name or a similar skin color.

  • Infants prefer to look at faces of their own race.
  • People tend to favor those who share their name or birthday.
  • These biases can influence our choices in friendships, relationships, and even career paths.

Media Influence. The mass media plays a powerful role in shaping our cultural beliefs and attitudes. Television shows, news reports, and advertising can all subtly influence our perceptions of different social groups and our own identities.

  • Prime-time TV shows often portray black characters more negatively than white characters.
  • News media often overrepresent minorities in stories about poverty.
  • These subtle biases can shape our unconscious attitudes and beliefs.

4. The Lingering Past Influences Our Present

Our mind lingers in the recent past and only gradually moves on into the new situation.

Carryover Effects. Our recent experiences can have a lingering effect on our thoughts, feelings, and behaviors in subsequent situations. This means that our current actions are often influenced by events that occurred in the recent past, even if we are not consciously aware of it. For example:

  • Physical arousal from exercise can be misattributed to sexual attraction.
  • Anger from a previous encounter can lead to more aggressive behavior in a new situation.
  • A bad mood from a rainy day can make us feel less satisfied with our lives.

Misattribution of Arousal. We often misinterpret the source of our emotions, attributing them to the present situation rather than to the lingering effects of past experiences. This can lead to irrational decisions and behaviors. For example:

  • Men who cross a scary bridge are more likely to be attracted to a woman they meet on the other side.
  • People who hold a warm cup of coffee are more likely to be generous.
  • People who are reminded of the flu are more likely to have negative attitudes toward immigrants.

Memory and Bias. Our memories are not objective recordings of the past but are instead reconstructions influenced by our current goals and motivations. This means that our memories can be biased by our present needs and desires. For example:

  • People who have a new baby tend to believe that crime rates have increased.
  • People who are reminded of the flu are more likely to have negative attitudes toward immigrants.
  • People who are reminded of the flu are more likely to have negative attitudes toward immigrants.

5. Gut Reactions: When to Trust and When to Doubt

We are able to detect aspects of another’s personality and behavior that are most important to us even when our mind is very busy.

Automatic Evaluation. Our minds are constantly evaluating our environment, categorizing things as good or bad, safe or dangerous. This process is often unconscious and automatic, guiding our behavior without our conscious awareness.

  • We have an immediate approach or avoidance reaction to things we like or dislike.
  • This evaluation system is fast and efficient, allowing us to make quick decisions.
  • It is a fundamental aspect of our survival and is shared by all animals.

The Limits of Intuition. While our gut reactions can be useful, they are not always reliable. Our intuitions can be influenced by biases, emotions, and past experiences, leading us to make poor choices.

  • We tend to trust our intuitions more than our conscious thoughts, even when they are wrong.
  • Our gut reactions can be influenced by our current mood or physical state.
  • We often misinterpret the source of our feelings, attributing them to the present situation rather than to the lingering effects of past experiences.

When to Trust Your Gut. Our gut reactions are more reliable when they are based on experience and expertise, and when we are in familiar situations. However, we should be more cautious when making decisions in unfamiliar situations or when our emotions are running high.

  • Trust your gut when you have a lot of experience in a particular domain.
  • Be wary of your gut when you are under stress or feeling strong emotions.
  • Supplement your gut reactions with conscious reflection when you have the time.

6. Mimicry: The Unseen Social Glue

Our emotional expressions were the original way humans shared information with each other about the state of the world.

The Chameleon Effect. We unconsciously mimic the behaviors of those around us, a phenomenon known as the chameleon effect. This includes their postures, gestures, facial expressions, and even their tone of voice.

  • This mirroring behavior is automatic and involuntary.
  • It serves as a form of social glue, promoting bonding and rapport.
  • It is a fundamental aspect of human interaction and is present even in infants.

Neural Basis of Mimicry. Our brains are wired to connect perception and action, with separate pathways for knowing and doing. This allows us to unconsciously imitate the behaviors of others, even without conscious awareness.

  • Mirror neurons in the brain are activated both when we perform an action and when we observe someone else performing that action.
  • This neural mechanism facilitates learning and social interaction.
  • It also explains why we are so susceptible to the influence of others' behaviors.

Mimicry and Social Connection. Mimicry plays a crucial role in building social connections and fostering cooperation. When we mimic others, we tend to like them more and feel more connected to them.

  • Mimicry increases feelings of trust and rapport.
  • It facilitates smoother and more coordinated interactions.
  • It is a natural and unconscious way we bond with others.

7. Goals: The Hidden Architects of Our Behavior

What we want and need strongly determine what we like and don’t like.

Goal-Driven Perception. Our goals and motivations shape how we perceive the world, influencing what we pay attention to, what we remember, and how we feel. We tend to see the world through "goal-colored glasses," focusing on information that is relevant to our current objectives.

  • Our goals can make us more sensitive to certain types of information.
  • They can also cause us to ignore or downplay information that is not relevant to our goals.
  • Our goals can even change our preferences and values.

Unconscious Goal Pursuit. Our goals often operate unconsciously, influencing our behavior without our conscious awareness. This means that we may be pursuing goals that we are not even aware of.

  • Our unconscious goals can lead us to make choices that are not aligned with our conscious values.
  • They can also cause us to engage in behaviors that we later regret.
  • Our unconscious goals can even change our perceptions of others, making us like or dislike people based on whether they help or hinder our goals.

The Power of Wishes. Our desires and aspirations for the future can have a powerful influence on our present thoughts and actions. What we want and need strongly determine what we like and don’t like.

  • Our goals can make us more open to outside influences, even subliminal advertising.
  • They can cause us to spend our money in ways we will later think were silly and wasteful.
  • They can cause us to like people we’d otherwise not like, and also to like our friends less than we usually do.

8. Harnessing the Unconscious for Self-Control

The most effective self-control is not through willpower and exerting effort to stifle impulses and unwanted behaviors. It comes from effectively harnessing the unconscious powers of the mind to much more easily do the self-control for you.

Conscious Thoughts Matter. Our conscious thoughts are causal, meaning that they have the power to change how we feel and what we do. We are not simply puppets of our unconscious minds.

  • We can use conscious reasoning to justify our actions and change our behavior.
  • We can use our conscious minds to make plans and set goals.
  • We can use our conscious minds to reflect on our experiences and learn from our mistakes.

The Paradox of Control. Acknowledging that we do not have complete conscious control over our behavior actually increases the amount of control we truly have. By understanding the hidden influences that shape our actions, we can begin to make more informed choices.

  • We can use implementation intentions to make our goals more concrete and actionable.
  • We can create habits that make good behavior more automatic and effortless.
  • We can design our environment to support our goals and reduce temptations.

Unconscious Self-Control. The most effective self-control is not through willpower but by harnessing the unconscious powers of the mind. This involves creating routines, using implementation intentions, and designing our environment to support our goals.

  • Implementation intentions help us link our goals to specific situations and behaviors.
  • Habits make desired behaviors more automatic and effortless.
  • By delegating control to our unconscious, we can free up our conscious minds to focus on other things.

Last updated:

Review Summary

4.02 out of 5
Average of 1k+ ratings from Goodreads and Amazon.

Before You Know It explores the unconscious influences on our behavior, decisions, and emotions. Bargh synthesizes decades of research on the power of the subconscious mind, illustrating how past experiences, present environment, and future goals shape our actions without our awareness. Readers appreciate the book's insights into human nature, though some find it repetitive. Many praise Bargh's engaging writing style and practical advice for harnessing unconscious processes. While some criticize the lack of new information, others find the book enlightening and potentially life-changing.

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About the Author

John A. Bargh is a renowned social psychologist and professor at Yale University. His first book for a general audience, "Before You Know It," draws on his career studying free will and human consciousness. Bargh's academic journey began at the University of Illinois, followed by a PhD from the University of Michigan. He taught at NYU before joining Yale in 2003. Bargh has received numerous awards for his contributions to psychology. Outside academia, he had a notable career in radio, working as a disc jockey and newscaster at various stations.

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