Collective Efficacy—Chicago Neighborhood Study

Abstract

The Collective Efficacy—Chicago Neighborhood Study instrument, developed by Sampson, Raudenbush, and Earls in 1997, is a foundational measure in sociology and community psychology designed to assess the perceived capacity of residents within a neighborhood to achieve public order and common goals. It operationalizes the concept of collective efficacy by measuring two distinct, yet interacting, dimensions: Social Cohesion and Trust and Informal Social Control. The scale uses a concise set of 10 items, which are typically administered to adult residents to quantify the strength of communal bonds and the shared willingness to intervene for the common good.

Keywords

Collective Efficacy, Social Cohesion, Informal Social Control, Neighborhoods, Community Psychology, Crime Prevention, Chicago Neighborhood Study, Sampson, Raudenbush, Earls.

Authors

Robert J. Sampson, Stephen W. Raudenbush, Felton Earls.

Purpose

The primary purpose of the scale is to quantitatively assess the structural and social mechanisms through which neighborhoods maintain order and regulate behavior, particularly in relation to crime and violence. Developed during the landmark Project on Human Development in Chicago Neighborhoods (PHDCN), the instrument was crucial for demonstrating empirically that high levels of collective efficacy predict significantly lower rates of violent crime, independent of traditional measures of socioeconomic status or population composition. The scale allows researchers and policymakers to gauge the capacity for action within a community.

The resulting score provides a robust measure of the neighborhood’s shared belief system concerning its ability to organize and execute actions necessary to maintain a safe and desirable environment. This measurement moves beyond simple neighborhood characteristics (like poverty) to capture the critical social process that mediates the relationship between disadvantage and negative outcomes.

Construct

The scale measures Collective Efficacy, a sociological construct defined as the linkage of mutual trust and social cohesion among neighbors combined with shared expectations for intervening on behalf of the common good (i.e., informal social control). It is not merely the sum of individual efficacy, but rather a property of the neighborhood itself.

The construct is specifically divided into two highly correlated but separable dimensions:

• Social Cohesion and Trust: This dimension assesses the relational aspects of the neighborhood, focusing on the degree of closeness, mutual willingness to help, and general trustworthiness among residents.
• Informal Social Control: This dimension assesses the behavioral expectations and the likelihood that residents would intervene to regulate deviant behavior, such as truancy, graffiti, or fighting, thereby maintaining public order.

A high score on the scale signifies a neighborhood where residents trust one another and are confident that they can activate joint action when necessary.

Validity

The scale possesses strong construct validity, as evidenced by the original multilevel study which demonstrated its significant inverse relationship with neighborhood rates of violent crime and homicide. This finding established the theoretical mechanism proposed by Sampson and colleagues. Furthermore, the two-factor structure (Cohesion/Trust and Informal Control) has been consistently supported through subsequent research, confirming that the scale accurately captures the intended dual components of the collective efficacy construct.

Reliability

In the original Chicago Neighborhood Study, the scale demonstrated high levels of internal consistency. Reliability analyses typically show that the 10-item measure, when aggregated to the neighborhood level, yields strong Cronbach’s alpha coefficients, often exceeding 0.80. This indicates that the items reliably measure the underlying latent construct of collective efficacy. The consistency across items ensures that the derived score is a stable and trustworthy representation of the neighborhood’s perceived capacity.

Factor Analysis

The structure of the scale is empirically supported by factor analysis, which confirms the hypothesized two-dimensional model. Items 1 through 5 load onto the Informal Social Control factor, reflecting expectations regarding intervention and regulation of public behavior. Items 6 through 10 load onto the Social Cohesion and Trust factor, reflecting the quality of social relationships. This clear factor structure validates the theoretical separation of trust/cohesion from the actual willingness to act, reinforcing the measure’s utility in sociological and criminological research.

Instrument

Test Type: Self-Report Survey/Neighborhood Assessment

Format: 10-item Likert-type scale

Language Available: Primarily English (widely translated for cross-cultural research)

Population Group: Adult Residents of Neighborhoods

Age Group: Adults (Typically 18+)

Population Details: Originally administered to a large, diverse sample of residents within the 343 neighborhoods of Chicago.

Test Methodology: Responses are collected at the individual level and then aggregated to the neighborhood unit (Level 2) to calculate the neighborhood mean score for collective efficacy, making it suitable for multilevel study analysis.

The scoring procedure is as follows:

• Social Control Items (1-5): Rated on a likelihood scale. Very likely = 5, Likely = 4, Neither likely nor unlikely = 3, Unlikely = 2, Very unlikely = 1.
• Social Cohesion Items (6-10): Rated on an agreement scale. Strongly agree = 5, Agree = 4, Neither agree = 3, Disagree = 2, Strongly disagree = 1.

IMPORTANT SCORING NOTE: Items 9 and 10 are negatively worded and must be reverse coded prior to summation. Point values for all 10 responses are summed. The intended range is 10–50, with higher scores indicating higher levels of perceived collective efficacy in a neighborhood.

Keywords

Collective Efficacy, Social Control, Social Cohesion, Neighborhood Assessment, Crime, Criminology, Robert Sampson, Community Intervention.

Authors

Author ORCID Identifier: Not provided in source content. (Robert J. Sampson is associated with the Harvard University Department of Sociology)

Affiliation Email addresses: Not provided in source content.

Correspondence Address: Not provided in source content. (The original study was conducted in association with the Project on Human Development in Chicago Neighborhoods).

Permissions & Fee and Test Year

The scale was published in 1997. As a foundational academic instrument derived from a major federally funded study, it is generally used freely for non-commercial academic research, though researchers should always cite the original 1997 publication. The instrument is publicly available in several compendiums of assessment tools.

Reference’s

Sampson RJ, Raudenbush SW, Earls F. Neighborhoods and violent crime: a multilevel study of collective efficacy. Science 1997;277:918-924.

The original instrument details can be found on pages 324-325 of Measuring Violence-Related Attitudes, Behaviors, and Influences Among Youths: A Compendium of Assessment Tools. The original PDF can be downloaded here: http://www.cdc.gov/violenceprevention/pdf/YV_Compendium.pdf

Items of the Collective Efficacy—Chicago Neighborhood Study

IMPORTANT: The following scale items must be preserved in their original language and must not be changed in any way.

Social Control

1. If a group of neighborhood children were skipping school and hanging out on a street corner‚ how likely is it that your neighbors would do something about it?
2. If some children were spray-painting graffiti on a local building‚ how likely is it that your neighbors would do something about it?
3. If there was a fight in front of your house and someone was being beaten or threatened‚ how likely is it that your neighbors would break it up?
4. If a child was showing disrespect to an adult‚ how likely is it that people in your neighborhood would scold that child?
5. Suppose that because of budget cuts the fire station closest to your home was going to be closed down by the city. How likely is it that neighborhood residents would organize to try to do something to keep the fire station open?

Social Cohesion

6. People around here are willing to help their neighbors.
7. This is a close-knit neighborhood.
8. People in this neighborhood can be trusted.
9. People in this neighborhood generally don’t get along with each other.
10. People in this neighborhood do not share the same values