Table 1
Description and order of the mixed-methods survey instrument. For more details on the items of the instrument, refer to Villanueva et al. (2020).
| SURVEY SECTION | DESCRIPTION | TYPE OF QUESTIONS |
|---|---|---|
| (1) Raw engineering perceptions | Participants were asked their perceptions of engineering and who belongs in engineering before definitions of HC were provided to them. | Qualitative (QUAL) |
| (2) Hidden curriculum awareness | Participants were given a written definition of HC followed by six HC statements. Participants were asked whether they agreed with the HC provided in the context of engineering | Quantitative (QUAN) & QUAL |
| (3) Video vignette | Participants watched a 7.5-minute video, which highlighted several examples of HC involving a marginalized Latino student and faculty member. The video vignette contains layers of HC, including racism, sexism, first-generation student status, as well as professionalism and success in engineering. The video does not focus on a single HC issue, and the participant likely interpreted the video based on their salient issues. Participants then defined HC in their own words and provided personal examples of engineering HC. | QUAL |
| (4) Emotions | Participants selected an emotion they felt corresponded to six HC assumptions and whether their emotion was positive or negative. They also recalled a personal experience with HC and the emotions they experienced in that situation. | QUAN & QUAL |
| (7) Self-efficacy (coping) | Participants were given a definition of self-efficacy and indicated their belief that they can succeed in engineering if six HC assumptions were present in their education. They also described an obstacle they have had to overcome in engineering. | QUAN & QUAL |
| (8) Self-advocacy | Participants were given a definition of self-advocacy and identified their willingness to ignite an action on behalf of themselves and others around six HC assumptions. They provided a personal example highlighting what they have self-advocated for in engineering. | QUAN & QUAL |
| (9) Wrap-up | These questions inquired about the major lessons learned about HC through this survey and asked participants to reflect on their major passions for pursuing a degree in engineering. | QUAL |
| (10) Demographics | Participants were asked to enter information about their axes of inequity, such as age, role (student versus faculty), university of study or employment, race, gender, ethnicity, and first-generation status. | QUAL |
Table 2
Demographics of participants (n = 330).
| DEMOGRAPHIC | n | % |
|---|---|---|
| Gender | ||
| Men | 188 | 57 |
| Women and Non-Binary | 142 | 43 |
| Age | ||
| 18-29 years of age | 276 | 84 |
| 30-39 years of age | 23 | 7 |
| 40 years of age or older | 31 | 9 |
| Racial and/or Ethnic Identity | ||
| Native American or Alaska Native | 2 | 1 |
| Asian | 23 | 7 |
| Black or African American | 15 | 5 |
| Hispanic, Latina/o, Chicana/o/ | 101 | 31 |
| White/Middle Easterna | 160 | 48 |
| Two or more races or ethnicities or Race and/or ethnicity not listed | 29 | 8 |
| Engineering Role | ||
| Undergraduate and graduate students | 204 | 91 |
| Professors and other professionals | 19 | 9 |
| Concentration | ||
| Aerospace/Mechanical/Automotive/Nuclear Engineering | 76 | 23 |
| Architectural/Civil/Environmental Engineering | 121 | 37 |
| Biological/Biomedical/Agricultural Engineering | 25 | 8 |
| Chemical/Petroleum/Materials Engineering | 31 | 9 |
| Computer/Electrical/Electronics/Audio Engineering | 52 | 16 |
| Engineering Education | 3 | 1 |
| Industrial/Process Engineering | 15 | 5 |
| Concentration not listed | 7 | 2 |
| First-generation undergraduate studentb | ||
| Yes | 108 | 33 |
| No/Not sure | 222 | 67 |
[i] a Please note that the White racial and/or ethnic category in the UPHEME survey includes participants from countries of origin outside the United States, e.g., Ireland or Poland.
b We defined first-generation in the instrument as individuals who are the first person to attend college from their immediate family and are aware of other terminologies that are surfacing in the literature (e.g., post-traditional).

Figure 1
Diagram of the coding scheme, showing initial, secondary, and thematic codes of participant’s interaction, HC, and strategy from sample quote. In order, we coded for strategies, HC, and interactions.
| RQ1: | What are salient HC messages in engineering? |
| RQ2: | How are HC messages communicated in engineering? |
| RQ3: | What strategies do individuals in engineering use to mitigate HC? |
| RQ3a: | What strategies do demographic groups in engineering use to mitigate HC? |
Table 3
HC message by participant identity. Bolded values indicate the HC message with the highest percentage for each demographic category.
| N | # OF INSTANCES | ENGINEERING IS DIFFICULT | ENGINEERING IS INFLEXIBLE | PEOPLE ARE UNDER- VALUED/REPRESENTED | ENGINEERING FOSTERS SUPPORT/GROWTH | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| # | % | # | % | # | % | # | % | |||
| Interaction total | 330 | 374 | 134 | 36 | 128 | 34 | 107 | 29 | 5 | 1 |
| Gender | ||||||||||
| Men | 188 | 221 | 94 | 43 | 105 | 48 | 17 | 8 | 5 | 2 |
| Women and Non-Binary | 142 | 153 | 40 | 26 | 23 | 15 | 90 | 59 | 0 | 0 |
| Racial Category | ||||||||||
| Majoritya | 186 | 207 | 86 | 42 | 69 | 33 | 50 | 24 | 2 | 1 |
| Marginalizedb | 144 | 167 | 48 | 29 | 59 | 35 | 57 | 34 | 3 | 2 |
| Gender X Racial Category | ||||||||||
| Majority Men | 108 | 125 | 60 | 48 | 56 | 45 | 7 | 6 | 2 | 2 |
| Marginalized Men | 80 | 96 | 34 | 35 | 49 | 51 | 10 | 10 | 3 | 3 |
| Majority Women and Non-Binary | 78 | 82 | 26 | 32 | 13 | 16 | 43 | 52 | 0 | 0 |
| Marginalized Women and Non-Binary | 64 | 71 | 14 | 20 | 10 | 14 | 47 | 66 | 0 | 0 |
[i] a “Majority” indicates participants’ racial and/or ethnic identities, including those who identify as Asian, Middle Eastern, or White, and are overrepresented in engineering, according to the National Science Foundation (National Center for Science and Engineering Statistics & National Science Foundation, 2021).
b “Marginalized” indicates participants’ racial and/or ethnic identities who identified as Black or African/African American, Native American and Alaska Native, Hispanic or Latin American, and Native Hawaiian and Pacific Islander and are historically underrepresented in STEM (National Center for Science and Engineering Statistics & National Science Foundation, 2021).
Table 4
Types of HC interactions (institutional, nonspecific, interpersonal) among participants. Bolded values indicate the highest percentage of strategies used by demographic category (row).
| N | # OF INSTANCES | INSTITUTIONAL HC | INTERPERSONAL HC | NONSPECIFIC HC | ||||
|---|---|---|---|---|---|---|---|---|
| # | % | # | % | # | % | |||
| Interaction total | 330 | 353 | 234 | 66 | 82 | 23 | 37 | 10 |
| Gender | ||||||||
| Men | 188 | 198 | 151 | 76 | 39 | 20 | 8 | 4 |
| Women and Non-Binary | 142 | 155 | 83 | 54 | 43 | 28 | 29 | 19 |
| Racial Category | ||||||||
| Majority | 186 | 199 | 138 | 69 | 46 | 23 | 15 | 8 |
| Marginalized | 144 | 154 | 96 | 62 | 36 | 23 | 22 | 14 |
| Gender X Racial Category | ||||||||
| Men Majority | 108 | 112 | 86 | 77 | 22 | 20 | 4 | 4 |
| Men Marginalized | 80 | 86 | 65 | 76 | 17 | 20 | 4 | 5 |
| Women and Non-Binary Majority | 78 | 87 | 52 | 60 | 24 | 28 | 11 | 13 |
| Women and Non-Binary Marginalized | 64 | 68 | 31 | 46 | 19 | 28 | 18 | 26 |
Table 5
HC strategies by demographic category. Bolded values indicate the highest percentage of strategies used by demographic category (row).
| N | CHANGING ENVIRONMENT | NEGOTIATING SELF | NO OR MINIMAL ACTION | ||||
|---|---|---|---|---|---|---|---|
| # | % | # | % | # | % | ||
| Interaction total | 330 | 54 | 14 | 318 | 83 | 54 | 14 |
| Gender | |||||||
| Men | 188 | 8 | 4 | 202 | 94 | 5 | 2 |
| Women and Non-Binary | 142 | 46 | 27 | 116 | 69 | 6 | 4 |
| Racial Category | |||||||
| Majority | 186 | 26 | 12 | 186 | 86 | 5 | 2 |
| Marginalized | 144 | 28 | 17 | 132 | 80 | 6 | 4 |
| Gender X Racial Category | |||||||
| Men | 188 | 8 | 4 | 202 | 94 | 5 | 2 |
| Majority | 108 | 3 | 2 | 118 | 95 | 3 | 2 |
| Marginalized | 80 | 5 | 5 | 84 | 92 | 2 | 2 |
| Women and Non-Binary | 142 | 46 | 27 | 116 | 69 | 6 | 4 |
| Majority | 78 | 23 | 25 | 68 | 73 | 2 | 2 |
| Marginalized | 64 | 23 | 31 | 48 | 64 | 4 | 5 |

Figure 2
Differences in salient pathways between participants with intersectional racial/ethnic and gender identities.
