# Questions tagged [conjoint-analysis]

a technique that asks participants to evaluate a series of tradeoffs between attributes, and by comparing these tradeoffs demonstrates the relative importance of attribute values

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### Conjoint Packages for R

Could you recommend an easy to use or comprehensive conjoint analysis package for R?
3k views

### Hierarchical multinomial logit with R/JAGS

I am working on a small project where I have to do a Choice Based Conjoint (CBC) analysis. In order to get the part-worths for the different consumers I need to estimate a hierarchical multinomial ...
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### Multicategory choice model with given categories

I have three product categories, $A,B,C$. Each category has two products, $0,1$. I provide a number of different kinds of choice situations, 1) the test subject is presented a single category and made ...
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### R gives me the error "contrasts can be applied only to factors with 2 or more levels" running an mlogit model, but all my factors have 2 levels [closed]

I have a set of results from a choice experiment that I am trying to analyse using the mlogit function in R. My data set is shown below, where each STR value represents the three choices in a single ...
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### Assumptions and contraindications of conjoint analysis

I'm working with a team that is pressing hard to do a conjoint analysis on what is essentially a 2x2 factorial design. I get the feeling, though, that this is just their favourite hammer and not ...
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### How do I do a conjoint analysis in R? I don't think the conjoint package is appropriate

We have conducted a conjoint survey of people's preferences when shopping for salmon. We have defined our salmon products in terms of "price" (20p steps from £3.60 to £5), "eco-certification" (none, ...
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I created an orthogonal design in R using AlgDesign package. I got 14 profiles and some output: D =0.2519353; A = 5.462121; Ge = 0.748; Dea = 0.714. How to interpret D , A , Ge and Dea? Also, In ...
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### Why do I get exact singularity when I add a dummy variable to a multinomial logistic using R mlogit?

I am using the mlogit package in R to run a multinomial logistic regression on pooled discrete choice data collected using two different questionnaire formats. I want to test whether the format had a ...
301 views

I am working on something to test advertisements. I have 3 independent variables I want to test (with mixed numbers of variations of each variable), and I would like to find the best combination of ...
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### Interpretation of clogit coefficients (Survival package in R)

Still very very new to R! I've run a conjoint (choice) experiment that uses the function clogit. Output as follows: (this model has been obtained through stepwise methods) ...
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### Using conjoint analysis for price elasticity

I have been asked to use conjoint analysis to find the price elasticity of a certain category of products. I have never used conjoint analysis before and have been reading about it for a while. I have ...
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### Choice based conjoint latent class analysis in R

How can we perform Latent class Analysis for choice based conjoint data, to both segment respondents and determine co-efficients for attributes at the same point of time? I know there is a package ...
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### Does a choice-based conjoint study have to be full profile?

In a Conjoint study, it's difficult for respondents to evaluate more than 6 product attributes at a time. Often this is solved via the use of Adaptive Conjoint Analysis (ACA), in which the ...
540 views

### Hierarchical bayes

I am programming in R using hierarchical bayes for a choice-based conjoint task and wondering how I code the "none of the above" option in the design matrix? The <...
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### D-efficiency in choice-based conjoint analysis

How to calculate the D-efficiency of experimental designs in conjoint analysis? Specifically, how do you specify the $X$ and the number of $nBetas$ in this formula:  D_e=\frac{|X'X|^{1/nBetas}}{...
• 315
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### Conjoint Analysis - Incorporating individual-specific intercept

We are new here, and have recently gotten a question that we have very much been struggling to answer. It is concerning a question regarding a conjoint analysis in which we have to incorporate an ...
947 views

### For a conjoint analysis in SPSS, I have 16 cards, but some combinations are unrealistic. Do I still include them in my survey and analysis?

I ran an orthogonal design for my conjoint plan and ended up with 16 cards to test. However, not all combinations make sense in the real world. I'm afraid that if I exclude the cards that are ...
788 views

### Handling singular matrix / linear separation in multinomial logit regression

I am doing an analysis of a choice-based conjoint / discrete choice experiment. After using the mlogit.data function in the ...
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### Conjoint analysis or discrete choice analysis ? And which software?

Suppose I would like to model the light-bulb preference of respondents. I would like to ask their preferences between existing bulbs on the market. And when you choose a bulb in a shop you usually see ...
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### 'No choice' option in conjoints

I have data from a conjoint with a "no choice" option. I am not sure, however, how I should model it. From reading the literature, I understand I should add a no-choice constant, but I am not sure how ...
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### Conjoint Analysis in R and SPSS result in Different Standard Errors using Same Data

I have been going through the tutorial by the author of the conjoint library in R (Tomasz Bartłomowicz) which can be found here. Specifically I have been going through example 1 (Ice Cream) and trying ...
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### Preparing a survey questionnaire

I have want to prepare a survey, the data from which will be used for conjoint analysis. The next phase would require doing a price elasticity study. The study is for a cosmetic product.The company ...
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### Full and fractional factorial designs

I have a data set consisting of six independent environmental variables (all binomial: present / absent) and one dependent variable (binomial: disease present / absent). In order to determine the ...
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### How should I shuffle a sample into multiple choice options?

We have a database of 10.000 products, each of them having 5 important features such as color and price. One of the features is the popularity of the product. I am building an app that quickly wants ...
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### Conjoint analysis in R

I am doing a conjoint analysis with stated choice probabilities. I have collected data on smartwatches preferences but asked the respondents not for a single choice but to allocate preferences. For ...
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### Calculating a similarity score based on both nominal and scale variables

I'm currently writing my master thesis on the importance of deep-level similarities between a mentor and mentee for the mentorship effectiveness. In order to test this, I've had 5 respondents ...
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### BIBD or IBD or PBIBD

I use block design for discrete choice experiment. While Balanced incomplete block design(BIBD) is considered as gold standard for blocking in choice experiments. However this is not always possible ...
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### Kendall's tau for holdouts low and not significant - Conjoint

I have done my Conjoint Analysis (fractional factorial design) but when it comes to validating the model, it shows a Kendall's tau for Holdouts of 0.33 and not significant. But Pearson's R and Kendall'...
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### Sample session for analysis of conjoint data in R

While I have successfully used R for Cluster Analysis and Correspondence Analysis, I'm new to the use of R-project for Choice-Based Conjoint. Per recommendations in this post, I'm looking at the ...
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### Multinomial probit for varying choice set

I apologize in advance for the "how do I run this model in R" question, but it turns out that's the shape my problem has assumed :-). Hopefully I have enough substantive questions surrounding it to ...
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1 vote
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### Off-the-shelf conjoint analysis software?

Any recommendations for easy to use and inexpensive software for conjoint analysis? I took graduate level stats more than a decade ago and would prefer something relatively easy to handle.
1 vote
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### conjoint or something else

I have shown customers two products with certain attributes and asked them to select one of the products. I have done this 12 times with different combinations for each customer. I have a total number ...
1 vote
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### CBC analysis using choicemodelr - interpretation of the output attribute values

I finished a choice-based conjoint (CBC) survey. Now i am evaluating my results with the R-Package "ChoiceModelR". With this i get Beta Values, with which i can, for example, compute attribute ...
1 vote
261 views

### Choice Conjoint-Analysis design for 2-way interactions

I want to set up a design for a conjoint-analysis with 5 Variables X1, X2, X3, X4, X5. All variables are factors. X1 can have 5 different realisations, X2 can have 3, X3 can have 4, X4 can have 3 and ...
1 vote
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### Experimental (factorial) design not exploiting the variance

I want to construct a design to use Choice Based Conjoint Analysis. I want to focus on D-Optimality, for that reason I use the R package AlgDesign which uses Fedorov Algorithm. I create 7 attributes ...
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1 vote
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### Probability in choice experiments

I just started to get into the theory of probability/choice experiments and there are some topics that I don't understand. Hope you can help me to get the hang of it. Lets say the following ...
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### Condition logit model: Weighted mean of ratios of coefficients of subgroups does NOT equal the ratios of coefficients of the whole sample, why?

I am well aware that when one splits the sample into subgroups (e.g. sex, country, whatever), and then estimates any logistic regression model, the coefficients are not comparable between (otherwise ...
1 vote
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### Relationship between conjoint measurement and conjoint analysis

The wikipedia page "Cojoint Analysis" says that conjoint analysis originated in mathematical psychology (without a reference) but also that it was developed by marketing professor Paul Green....
1 vote
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### Conjoint analysis for continuous choice

I am new to conjoint analysis and have been following a tutorial based on the mlogit package in R. However, I can't apply this modeling technique to my data for ...
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### Conjoint analysis: bias due to no-choice option and linear attribute

At the moment I am analysing survey data using Bayesian estimation in R (bayesm package) For my analysis, I have included a no-choice option that is coded as a series of zeros. However, I also have a ...
1 vote
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### Modeling stated preference alternative labels vs alternative characteristic levels

I have data from a stated preference survey in which each respondent answers 3 questions each with 3 alternatives. A status_quo / opt-out alternative is the first option for all questions. The ...
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1 vote
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### Experimental design for discrete choice response

I'm designing a survey where people need to choose one of three transportation alternatives. Here are the alternatives, their specific factors/attributes and the levels I intend to use for each: <...
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### From Discrete choice to Conjoint utilities

I'm having trouble figuring out how to correctly calculate conjoint part-worth-utility from a discrete choice experiment. I have recently run a pilot study to analyse in R where I used the packages “...
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### Utility partworths from dicrete choice experiments

Is it possible to estimate utility partworths from a discrete choice experiment (DCE)? For example, if you construct a DCE using the R package support.CEs and ...
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### Full-Factorial Design (3^2): Not sure about right method for analysis

I ran an experiment (online-survey) showing venture capitalists 9 fictional startups that only differed in factor 1 and factor 2. Both factors had three levels: Factor 1 = 50,250,450; Factor 2 = 0.5,1,...
1 vote
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### How do I deal with split samples for conjoint in SPSS?

We ran a survey of a sample of over 4,000 where we asked about 16 cards (product combinations). To combat survey fatigue, we randomly assigned each respondent 4 of the cards, so that every respondent ...
1 vote
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Could you please help me with conjoint analysis. I would like to conduct choice based conjoint. I have created attributes and levels of the product. My dependent variable is willingness to pay. So ...
1 vote
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### Likert Scale vs Conjoint Analysis. Which to use? [closed]

I am planning to conduct a questionnaire to obtain information of a tenant's perspective on management in a building. I would need to ask the tenants to fill up the questionnaire about how important ...
1 vote