Over the past 25 years, evaluators of social programs have searched for nonexperimental methods that can substitute effectively for experimental ones. Recently, the spotlight has focused on one method, propensity score matching (PSM), as the suggested approach for evaluating employment and...

Over the last year the German government has introduced a comprehensive set of labor market policy reforms, the so-called Hartz reforms, which aim at a significant reduction of unemployment. To this end, (a) many of the existing instruments of active labor market policy are modified...

Complexity theory has increasingly been discussed and applied within evaluation literature over the past decade. This article reviews the discussion and use of complexity theory within academic journal literature. The aim is to identify the issues to be considered when applying complexity theory...

Purpose – Parenting programmes are seen as feasible and cost-effective in preventing early behavioural problems in children and adolescents. A number of studies have concluded that such programmes are effective in reducing child problem behaviours and improving the skills and well-being of...

We test the effectiveness of team incentives by running a natural field experiment in a retail chain of 193 shops and 1,300 employees. As a response to intensified product market competition, the firm offered a bonus to shop teams for surpassing sales targets. A bonus to teams rather than...

The German educational system is characterized by pronounced educational disparities based on the parental socioeconomic status. Despite the rather strong stratification of the secondary school sys-tem and social selection into obtaining the university entrance qualification, the transition to...

This paper explores communication strategies for anchoring households' medium-term inflation expectations in a high inflation environment. We conducted a survey experiment with a representative sample of 4,000 German households at the height of the recent inflation surge in early 2023, with...

This paper explores communication strategies for anchoring households' mediumterm inflation expectations in a high inflation environment. We conducted a survey experiment with a representative sample of 4,000 German households at the height of the recent inflation surge in early 2023, with...

In an RCT, a large retail chain's CEO sets new goals for the managers of the treated stores by asking them 'to do what they can' to reduce the employee quit rate. The treatment decreases the quit rate by a fifth to a quarter, lasting nine months before petering out, but reappearing after a...

In a field experiment with a retail chain (1,300 employees, 193 shops), randomly selected sales teams received a bonus. The bonus increases both sales and number of customers dealt with by 3%. Each dollar spent on the bonus generates $3.80 in sales, and $2.10 in profit. Wages increase by 2.2%...