Parental favoritism is the perception — or the reality — that one or more children receive preferential treatment from their parents compared to their siblings. According to a study published in the Journal of Family Psychology, 74% of mothers and 70% of fathers admit in confidential interviews to having a preference for one of their children, although the vast majority would never acknowledge it publicly.
What research consistently shows is that what causes the most damage is not the favoritism itself, but the perception of favoritism. A child can receive exactly the same treatment as their sibling and still feel less loved if they perceive the other receives more attention, more praise, or more emotional closeness. Dr. Karl Pillemer's research at Cornell University confirms that perceived differential treatment is a stronger predictor of adult sibling conflict than actual differential treatment.
| Family Role | Message Received | Emotional Wound | Effect on Adult Life |
|---|---|---|---|
| The favourite | "You're special" | Pressure to be perfect | Anxiety, impostor syndrome |
| The invisible one | "Don't cause problems" | "I'm not enough" | Low self-esteem, difficulty asking |
| The rebel | "Always the same" | "They only see me when I cause trouble" | Defiant behaviour, self-sabotage |
| The caretaker | "You're the mature one" | "My value is in serving others" | Codependency, difficulty receiving |
| The comedian | "Such a joker" | "My emotions don't matter" | Difficulty with emotional intimacy |
Parents tend to feel closer to the child who most resembles them, whether in temperament, interests, or personality. It is an unconscious process of recognition: "You are like me; I understand you." Object-relations theory in psychology explains this as the parent's narcissistic investment in the child who mirrors their own identity.
The child with an easy temperament (calm, adaptable, compliant) generates less stress than the child with a difficult temperament (intense, sensitive, challenging). Parents gravitate toward ease, not out of less love, but out of exhaustion. Thomas and Chess's research on temperament confirms that goodness of fit between parent and child temperament significantly affects the quality of the relationship.
Sometimes a parent projects their own unfulfilled aspirations onto one child: "This child will be what I could not be." That child receives a disproportionate emotional investment, and the others are left in the shadow.
The firstborn tends to receive more attention (due to novelty and having undivided parental resources). The youngest tends to be "the spoiled one." The middle children end up in no-man's-land. These dynamics are well documented in psychologist Alfred Adler's research on birth-order effects and have been replicated across cultures.
The wound of the non-favoured child is one of the most silent and persistent. It manifests as:
Favoritism also harms the favoured child, though less obviously:
The first step is validating your experience. "My parents treated my sibling differently from me. That hurt, and it still hurts." You do not need your parents to acknowledge it for it to be real. Your perception is valid.
Your sibling did not choose to be the favourite. You did not choose to be invisible. You were both placed in roles you never asked for, inside a system neither of you designed. Being angry at your sibling for what your parents did is aiming the arrow at the wrong target.
Families have an official story: "We treated you all the same." Questioning that narrative is not attacking the family: it is seeking the truth. You can do it internally or, if it is safe, with your parents or siblings. Tools like the AI on LetsShine.app allow you to explore these narratives in a judgment-free space, doing emotional archaeology of your family patterns.
If you grew up feeling you were not enough, your work as an adult is to demonstrate — to yourself, not to your parents — that you are. This is not achieved through external achievements but through internal self-compassion: treating yourself with the care you did not receive. Dr. Kristin Neff's research on self-compassion provides evidence-based practices for this healing process.
An honest conversation with the favoured sibling can be profoundly restorative: "I always felt that Mum loved you more. I don't blame you, but I need you to know how it affected me." That mutual acknowledgment can transform the relationship.
Yes, but it requires radical honesty. Parents who acknowledge — at least to themselves — that they have a favourite can take conscious steps: dedicating individual time to each child, validating each one's unique qualities, and avoiding comparisons. It is not about loving everyone the same (that is impossible), but about treating everyone with equity.
Yes. Research shows that the majority of parents have a preference for one child, though they rarely admit it. What matters is not that the preference exists, but that it does not translate into unequal treatment.
Not necessarily. Favoritism can fall on any child: the one who most resembles the parent, the one with the easiest temperament, the one who meets family expectations, or paradoxically, the one who causes the most problems (because they absorb all the attention).
You can, but prepare for denial. Most parents deny favoritism because acknowledging it generates guilt. If you decide to speak, use first-person statements: "I felt less valued" rather than "You always preferred Sarah."
Profoundly. The non-favoured sibling may harbour chronic resentment toward the favoured one, making the relationship difficult. Unresolved favoritism is one of the main causes of adult sibling estrangement and inheritance conflicts.
It is possible, but harder. Therapy (or self-exploration tools like the AI on LetsShine.app) offers a safe space to process emotions that have been buried for decades. What is not processed is repeated: if we do not heal the favoritism wound, we are likely to replicate it — unconsciously — with our own children.
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