Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Randomization tests for peer effects in group formation experiments   Measuring the effect of peers on individual outcomes is a challenging
problem, in part because individuals often select peers who are similar in both
observable and unobservable ways. Group formation experiments avoid this
problem by randomly assigning individuals to groups and observing their
responses; for example, do first-year students have better grades when they are
randomly assigned roommates who have stronger academic backgrounds? Standard
approaches for analyzing these experiments, however, are heavily
model-dependent and generally fail to exploit the randomized design. In this
paper, we extend methods from randomization-based testing under interference to
group formation experiments. The proposed tests are justified by the
randomization itself, require relatively few assumptions, and are exact in
finite samples. First, we develop procedures that yield valid tests for
arbitrary group formation designs. Second, we derive sufficient conditions on
the design such that the randomization test can be implemented via simple
random permutations. We apply this approach to two recent group formation
experiments and implement the proposed method in the new RGroupFormation R
package.

36
The categories of this paper are: cmp-lg
6
The categories of this paper are: astro-ph
8
The categories of this paper are: hep-ex
32
The categories of this paper are: atom-ph
33
The categories of this paper are: plasm-ph
12
The categories of this paper are: nucl-th
31
The categories of this paper are: ao-sci
14
The categories of this paper are: math-ph
10
The categories of this paper are: q-bio
19
The categories of this paper are: eess
2
The categories of this paper are: math
17
The categories of this paper are: q-fin
23
The categories of this paper are: solv-int
27
The categories of this paper are: comp-gas
1
The categories of this paper are: cs
13
The categories of this paper are: quant-ph