Identity congruence: meaning and application

Two brands of running shoes barely differ in quality and price, yet one runner chooses at once and another hesitates. Often an unspoken question plays a part: does this suit who I am, or want to be? This article explains what identity congruence means, how it relates to role fit and how to research it without imposing a fixed profile.

Identity congruence is the experienced fit between a choice and a person's self-image: does this product, brand, role or behaviour suit who someone is or wants to be?

Consumer research calls this self-congruity; at work it is called fit, and for roles role fit. It is a judgement made in a particular situation, not a fixed personal trait. Congruence can make a choice more attractive, but is neither preference nor behaviour. Its role depends on the context and on the self-image someone compares with.

Identity congruence is not a separate theory but an umbrella term for a recurring idea: people choose and act partly on whether something fits their self-image. Four lines matter most.

Self-congruity in consumer behaviour. In 1982 Joseph Sirgy brought together the fragmented research on self-concept in consumer behaviour in a critical review (Sirgy, 1982). He later distinguished congruence with the actual self-image from congruence with the ideal self-image, explained by two motives: staying consistent and enhancing self-esteem (Sirgy, 1985). A meta-analysis found an average relationship of r = .31 between self-congruity and consumer decisions. Its strength depended on factors such as how social the self-motive was, the self-enhancement sought and how thoroughly people thought (Aguirre-Rodriguez et al., 2012).

Identity-based motivation. Daphna Oyserman describes this as the readiness to act and think in ways that fit an identity. Identities feel stable but are sensitive to cues in the situation, and their meaning is constructed afresh in each context. Behaviour not seen as something 'people like us' do is chosen less often, even when someone endorses the goal (Oyserman, 2009).

Social identity. Part of the self-image derives its content from the groups people count themselves as belonging to, and people strive for a positive social identity (Tajfel & Turner, 1979).

Role identity. The identity theory of Sheldon Stryker and Peter Burke looks at identities tied to roles. It has two related strands: one on how social structures relate to a person's identities, and one on the internal processes through which people seek to have their identity confirmed (Stryker & Burke, 2000). This line forms the bridge to role fit.

Before asking whether something fits a person, decide which self-image you mean:

• Actual self-image: how someone sees themselves now; relates to the motive to stay consistent.
• Ideal self-image: how someone would like to be; relates to the motive to enhance self-esteem.
• Social self-image: how someone thinks others see them, sometimes supplemented by how they want to be seen.

The distinction between actual and ideal has been studied empirically (Sirgy, 1985); the meta-analysis shows that the social character of the self-motive partly determines the strength of the effect (Aguirre-Rodriguez et al., 2012). A choice can therefore fit who someone is now and say little about who they want to become.

Role fit is identity congruence applied to work. Work psychologists study it as person–job fit. A large meta-analysis distinguishes two forms (Kristof-Brown et al., 2005):

• Demands and abilities: can someone do what the role requires?
• Needs and supplies: does the role offer what someone seeks and values?

Here, person–job fit was on average strongly associated with job satisfaction (corrected correlation .56), clearly with organisational commitment (.47) and lower intention to quit (−.46), but more weakly with overall performance (.20). Direct questions about perceived fit almost always gave stronger relationships than indirect calculations.

Identity theory adds that a role is also an identity that seeks confirmation. Someone can handle a role and still not recognise themselves in it. That is different from role conflict or role interference, where roles or tasks clash.

Congruence is the judgement that something fits the self-image. Preference is choosing one alternative over another. Behaviour is what someone eventually does. Congruence can support a preference and a preference can lead to behaviour, but neither step is a given. Someone can find a sustainable brand fitting and still buy the cheaper one.

Identity congruence touches on a target group's values and vision: values say what someone considers important, congruence says whether a specific choice fits that in their experience. Emotional drivers and desired state and threat state are also close: the ideal self-image often describes a desired state.

The concept helps most where functional arguments fall short, such as a brand that wins on quality but is not chosen.

• Explaining: is a choice held back or carried by whether it fits people, and with which self-image?
• Phrasing: does a message connect with an identity people already have or want, without imposing it? According to the identity-based model, a situation can evoke an identity and shape its meaning (Oyserman, 2009). That is a hypothesis to test, not a recipe.
• Designing roles: does a role connect with who people are and want to be, in addition to what they can do?

Measurement has two routes. The traditional route asks people to rate a user image and their self-image on the same attributes and adds up the differences. It has known problems: difference scores, possibly irrelevant attributes and a rule that assumes shortfalls compensate for each other. In six studies, a direct, global question about perceived fit predicted better (Sirgy et al., 1997). Open associations reveal which attributes people consider relevant; read how you measure associations.

1. Define choice and context: which alternatives, which situation, which moment?
2. Choose the self-image: actual, ideal or social? If in doubt, examine several and keep them separate.
3. Collect people's own words: let people explain in associations and conversations what the choice means and how they see its users.
4. Measure perceived fit: ask directly how well the choice fits, preferably for each self-image.
5. Set this against preference and behaviour: does fit go together with what people choose and do, and what else weighs in?
6. Report with limits: state the context, timing, spread and the fact that this is self-report.

This example is fictional. No research results are attached to it.

Situation. A specialist sports shop sells two brands of running shoes. Brand A positions itself on recycled materials, brand B on speed and race performance. Many customers hesitate.

Choice question. Does the question of whether a brand suits the runner play a part in that hesitation, and with which self-image?

Available information. Sales per brand and remarks from sales staff.

Suitable approach. Customers give open associations with both brands and with 'someone who wears this brand'. They are then asked directly how well each brand fits how they see themselves now and who they want to become as runners. The context is recorded: training shoe or race shoe.

Possible interpretation. Suppose brand A fits better with how customers live now and brand B with who they want to become. The choice then pulls towards two self-images, which could explain the hesitation. This is a hypothesis, not a profile, and may differ by purchase context.

Next step. Test two messages, for example one that combines sustainability and progress and one that focuses on a single self-image, with an outcome measure defined in advance.

Short role fit example (also fictional). An experienced specialist is asked to become team leader. She can handle the tasks but sees herself mainly as a subject specialist. A conversation about role fit distinguishes what the role requires, what it offers her and whether she recognises herself in it. The role might be reshaped, or she might first take it on temporarily. A single conversation does not produce a fixed verdict on who she is.

• Equating congruence with preference or behaviour. A high fit does not mean someone buys or accepts the role; at most it is a factor that carries weight.
• Imposing a fixed identity profile. Identities are sensitive to the situation (Oyserman, 2009). A target group 'is' not sustainable or performance-driven.
• Not naming the self-image. Without recording which self-image you mean, you cannot compare results.
• Treating self-report as measurement. Fit is a judgement, sensitive to wording, social desirability and timing. Direct fit judgements are also more prone to bias when the same person reports the outcome (Kristof-Brown et al., 2005).
• Reasoning from group to person or from association to cause. An average relationship says nothing certain about one customer or employee, and does not prove that congruence causes a choice.

Identity congruence is the experienced fit between a choice and a person's self-image, whether that choice concerns a product, brand, role or behaviour. The relationships are consistent but moderate and strongly dependent on context and self-image. So use the concept as a research question: which choice, which self-image, which situation? Then you will see why a choice does or does not resonate, without placing people in a fixed profile.