Intelligence-led policing (ILP) was introduced in the 1990s as a proactive approach to policing, but to date, there is a lack of studies that have synthesized and summarized the central characteristics and insights of (quasi-)experimental studies related to ILP. This study aims to address this gap by synthesizing and characterizing the central…

Randomized experiments involving education interventions are typically implemented as cluster randomized trials, with schools serving as clusters. To design such a study, it is critical to understand the degree to which learning outcomes vary between versus within clusters (schools), specifically the intraclass correlation coefficient. It is also…

Many inquiries regarding the causal effects of policies or programs are based on research designs where the treatment assignment process is unknown, and thus valid inferences depend on tenuous assumptions about the assignment mechanism. This article draws attention to the importance of understanding the assignment mechanism in policy and program…

Web-based surveys have become more prevalent in areas such as evaluation, research, and marketing research to name a few. The proliferation of these online surveys raises the question, how do response rates compare with traditional surveys and at what cost? This research explored response rates and costs for Web-based surveys, paper surveys, and…

Background: A small but growing body of research evidence suggests that place-based police interventions generate significant crime control gains. While place-based policing strategies have been adopted by a majority of U.S. police departments, very few agencies make a priori commitments to rigorous evaluations. Objective: Recent methodological…

Gathering time-series data of behaviors and psychological variables is important to understand, guide, and evaluate behavior-change campaigns and other change processes. However, repeated measurement can affect the phenomena investigated, particularly frequent face-to-face interviews, which are often the only option in developing countries. This…

Risks of life on the street caused by inclement weather, harassment, and assault threaten the unsheltered homeless population. We address some challenges of enumerating the street homeless population by testing a novel capture-recapture (CR) estimation approach that models individuals' intermittent daytime visibility. We tested walking and…

Collected substance use survey data from 69 of 105 targeted school districts in 12 states. Results indicate that the availability and quality of extant data currently limit their usefulness. Recommendations are made to assisting schools to improve the value of their substance use surveys. (SLD)

Compared face-to-face interviews with self-administered questionnaires as methods of data collection in a study of smoking attitudes and behavior conducted with 601 young Latina and African American women. Results show neither mode to provide superior results and indicate that cost effectiveness and convenience may be greater for the…

Reasons for not returning a questionnaire were studied among Lutheran church members sent a postcard to indicate no intention of replying. The analysis is based on 431 returned postcards. For most nonresponders, the interest value of the questionnaire topic was not high enough. Many who returned the negative reply card would be resistant…

Reliability and validity of self-report data provided by 178 mentally ill homeless persons were generally favorable. Self-reports of service use also generally agreed with treatment staff estimates, providing further validity evidence. Researchers and administrators can be relatively confident in using such data. (SLD)

Two methods for dividing an interrupted time-series study between baseline and experimental phases when study resources are limited are compared. In fixed designs, the baseline duration is predetermined. In flexible designs the baseline duration is contingent on remaining resources and the match of results to prior expectations of the evaluator.…

Compared self-administered diaries and telephone interviews as ways of collecting data from 100 adults and adolescents in a survey of drinking, drug use, and sexual activity. Outlines advantages of each method and the higher personnel costs of telephone interviews. (SLD)

A methodology for developing clinical/research assessment tools, training interviewers, and continuously assessing interrater reliability is discussed. Data from a multisite national evaluation of long-term health care programs (i.e., the Social/Health Maintenance Organization (HMO) for elderly clients) are used. Focus is on providing research…

The linked judgments approach is offered as a potential solution to problems of statistical conclusion validity when judges' ratings are employed in pretest-posttest designs. (Author/GK)