Questions tagged [randomized-experiment]

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Entropy Balancing or Propensity Score matching in an Experiment (that needed Intention to Treatment instrumental variable IV approach)

I did an experiment with random assignment to two treatment groups and one control group. I had problems to encourage participation in one treatment (treatment 1), so at the end, I had to randomly ...
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1answer
26 views

How to interprete independence between treatment indicator and outcomes?

In Woodridge's textbook "Econometric Analysis of Cross Section and Panel Data", page 907, it says ...the treatment indicator $w$ is statistically independent of ($y_0$, $y_1$), as would occur when ...
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56 views

Question about an ergodicity in economics paper

Disclaimer: I'm not well read in economics but am mathematically literate (PhD in Mech Eng) Recently I was sent a paper from Nature Physics, "The ergodicity problem in economics" by Ole Peters. I ...
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1answer
62 views

Understanding this particular criticism of RCTs by Deaton and Cartwright

Deaton and Cartwright make several criticisms of randomized controlled trials (RCTs). My question is about this one in particular from a 2016 VoxEU piece: Well-conducted RCTs could provide unbiased ...
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1answer
59 views

Can I treat pooled cross-section as panel data and do regression analysis?

I work with a large survey data that is pooled cross-section, i.e, people interviewed are randomly chosen in each time period. This is not panel data. But, I aggregate the individual cells according ...
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20 views

Can I draw a smaller sample from one treatment group?

in an RCT, I have 3 different treatment groups and one control group. The size of the control group is around 1000 while the size of other groups are just above 300. To test balance I used ANOVA and ...
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2answers
45 views

Randomisation and balance in experiments

Suppose we are interested in the effect of some 'treatment' on some outcome of interest. A common practice is to select a group of people and then randomly choose some fraction (often half) to receive ...
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0answers
49 views

Calculate power for multiple rounds of public goods experiment

I would like to calculate/simulate the a-priori necessary sample size for a repeated public goods experiment. $N$ Participants play $R$ rounds of a public goods game (linear, voluntary contribution ...
2
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1answer
29 views

Software for field work: collecting survey data (multi-platform, on-line and off-line)

As part of an RCT, I am looking for Software to record digitally the answers some survey questionnaires. The questionnaire is somewhat long, ~100 questions divided into 10 blocks. We will collect 3 ...
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2answers
489 views

Problems with Representative Sampling

I am curious: what exactly are the problems caused by using representative sampling rather than random sampling whenever creating a subsample of large dataset for nonexperimental analysis. Further, ...
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1answer
1k views

How encouragement design works practically?

I'm trying to understand the encouragement design but I have some doubts. For example, if I want to introduce a voucher for teachers that can be used for professional development(the treatment) and I ...
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289 views

Self-selection bias during the course of experiments

Suppose you are running a randomized experiment to assess the effect of $X$, say some training program for unemployed people, on $Y$, say the chance of finding a job in the coming year. Suppose also ...