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Climate Change and Fertility Desires: An Experimental Study among University Students in Belgium and Italy
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The .zip archive includes the following files:

 1. An R (v4.2.2) file with the analysis.
    Analysis DR #6561.Rmd

    It contains the following sections:
      1.1 Installation and loading of necessary packages
      1.2 Data cleaning and preparation
      1.3 Descriptive and exploratory analysis
      1.4 Multinomial analysis
       1.4.1 Country differences
       1.4.2 Perceived responsibility
       1.4.3 Satisfaction with the government


 2. The data used in the analysis 
    data.sav   
 
    The data was collected in Belgium and Italy (May 2023) using the online platform Qualtrics. For additional information on data collection and sampling procedures, see section 4 of the text.

    The provided dataset includes a sample of 431 respondents. This sample was obtained through preliminary data cleaning, which involved the exclusion of:
      - individuals who did not consent, were not university students, or were studying in countries other than Belgium or Italy (predetermined in the survey design).
      - individuals from the sample who indicated having children (N=8) and those who either did not specify their nationality or identified with nationalities other than Belgian and Italian (N=8).
 
    Given the limited sample size, in order to preserve as many respondents as possible, we have refrained from excluding all missing values a priori and instead have chosen to address them case by case. 
    Therefore, the sample size may vary slightly throughout the text (the specific sample size is always indicated).
    We have removed the variable containing the manually added area of study of some respondents to preserve their privacy.

Below is a list of variables present in the dataset. Only variables marked with an asterisk (*) were used in the analysis.

 [1] "StartDate"                   "Duration__in_seconds_"       "ResponseId"                  "student_status*"             
 [5] "student_status_88_TEXT"      "stud_cntry"                  "area_study"                  "problems3_1"                
 [9] "problems3_2"                 "problems3_3"                 "problems3_4"                 "problems3_5"                
[13] "problems3_6"                 "problems3_7"                 "problems3_8"                 "problems3_9"                
[17] "problems3_10"                "problems3_11"                "problems3_88"                "problems3_99"               
[21] "problems3_88_TEXT"           "problem1"                    "problem1_88_TEXT"            "climate_change*"             
[25] "climate_thought"             "climate_serious"             "climate_worry*"               "responsibility_1"           
[29] "responsibility_2"            "personal_responsibility"     "responsibility_4"            "responsibility_5"           
[33] "responsibility_6"            "responsibility_7"            "responsibility_88"           "responsibility_99"          
[37] "responsibility_88_TEXT"      "government*"                  "individuals"                 "pers_responsibility*"        
[41] "gender"                      "age*"                         "nationality"                 "nationality_88_TEXT"        
[45] "sexual_o"                    "sexual_o_88_TEXT"            "relationship_status"         "relationship_status_88_TEXT"
[49] "children"                    "Vignette*"                    "italian*"                     "partnered*"                  
[53] "heterosexual*"                "fertility*"                   "female*"                     


- student_status: whether the respondent is currently a university student and at what stage (1. bachelor's; 2. master's; 3. PhD; 88. other; 99. not a student).
- climate_change: belief in whether climate change is occurring (1. definitely not; 2. probably not; 3. probably yes; 4. definitely yes).
- climate_worry: level of concern regarding climate change (1. not worried at all; 2. slightly worried; 3. moderately worried; 4. very worried; 5. extremely worried).
- government: level of agreement with the sentence: "Governments are not doing enough to tackle climate change" (1. strongly disagree; 2. somewhat disagree; 3. neither agree nor disagree; 4. somewhat agree; 5. strongly agree).
- personal_responsibility: extent of perceived personal responsibility to tackle climate change (1. no responsibility; 2. a small amount; 3. a moderate amount; 4. a high amount; 5. a very high amount).
- italian: dichotomous variable from "nationality"(0. Belgian; 1. Italian).
- Vignette: exposure to a specific condition/scenario: optimistic, control, pessimistic.
- partnered: dichotomous variable from "relationship_status" (0. unpartnered; 1. partnered).
- heterosexual: dichotomous variable from "sexual_orientation" (0. non-heterosexual; 1. heterosexual).
- fertility: reported desire to have biological children in one's lifetime (1. no desire; 2. low desire; 3. moderately low desire; 4. neither low nor high desire; 5. moderately strong desire; 6. strong desire; 7. very strong desire).
- female: dichotomous variable from "gender"(0. male; 1. female).