Martha Alicia Tronco RosasInstituto Politécnico Nacional

The Violentómetro

An educational resource for recognising manifestations of violence that can be mistaken for affection or go unnoticed.

I created it at the Instituto Politécnico Nacional in 2009, following a study of relationships among its students. The ruler names controlling behaviours, physical aggression and sexual violence, organised into three levels of alert.

When violence is interpreted as affection

In the 2009 study, the authors described controlling behaviours and aggression that students could understand as affection, attention or a normal part of a relationship.

Behaviours described in the study

  • Jealousy and restrictions
  • Constant phone calls
  • Dictating clothing or behaviour
  • Hitting presented as play

could be interpreted as

Interpretations reported by the authors

  • Affection
  • Attention
  • Something normal in a relationship
Summary of the conclusions in Tronco Rosas and Ocaña López (2012), p. 26. It does not represent percentages or a sequence of behaviours. Read the source (Spanish).

The problem of recognising these experiences informed the creation of the Violentómetro: making manifestations of violence visible and giving them a name.

Read the historical ruler

The colours distinguish three levels of alert. Open each band to read its behaviours.

The behaviours can occur in different combinations. Their position on the ruler does not mean that someone will experience all of them or encounter them in that order.

Instituto Politécnico Nacional

Violentómetro

Original design · Digital reading
Be careful! Violence will increaseView behavioursClose behaviours
  • Hurtful jokes
  • Blackmail
  • Lying / Deceiving
  • Ignoring / The silent treatment
  • Jealousy
  • Blaming
  • Belittling
  • Ridiculing / Insulting
  • Humiliating in public
  • Intimidating / Threatening
  • Controlling / Forbidding
React! Do not let yourself be destroyedView behavioursClose behaviours
  • Destroying personal belongings
  • Groping
  • Aggressive touching
  • Hitting “as a joke”
  • Pinching / Scratching
  • Pushing / Shoving
  • Slapping
  • Kicking
  • Locking in / Isolating
You need professional help!View behavioursClose behaviours
  • Threatening with objects or weapons
  • Threatening to kill
  • Forcing sexual intercourse
  • Sexual abuse
  • Rape
  • Mutilation
  • Killing

Controlling or forbidding: friendships, family contact, money, places, clothing, activities, email or phone use.

Instrument created by Martha Alicia Tronco Rosas · Instituto Politécnico Nacional

Digital presentation of the behaviours and alerts in the historical design documented by the IPN in 2012. The layout adapts to the screen; the published image is preserved below. The English labels are a working translation.

View the ruler in the original publication
Historical Violentómetro ruler, with yellow, pink and purple bands and IPN identity. Reproduced from the 2012 publication, figure 8.
No sólo ciencia y tecnología… Ahora, el IPN a la vanguardia en perspectiva de género (2012), p. 28, figure 8. View the page in the PDF (Spanish). Source: IPN repository.

Updates and later research

Updates to the material and projects studying it have their own dates and purposes.

  1. 2021

    The IPN adds digital violence

    The update includes sharing intimate content without consent, sextortion and stalking on social networks.

    Read the IPN announcement (Spanish)
  2. 2025

    Reviewing its impact after fifteen years

    The IPN’s project listing records Martha’s research on the Violentómetro’s impact as a prevention tool and the institution’s contribution to the world.

    View the project in her research record (Spanish)

Explore adaptations and settings

Family environment and beliefs about feelings

A recent survey linked to the Violentómetro research explores family life and beliefs about gender roles. These results come from a different survey from the 2009 study.

Feeling heard at home

The proportion of people who feel heard varies according to how they describe their family environment.

HeardI avoid being at home

16,035 records. Percentages within each family environment.

Two selected responses from the family section. A person may give both responses; the comparison does not establish causation.

View responses, counts and source
Feeling heard at home — response counts
GroupBaseHeardI avoid being at home
Democrático (cooperación).7,6705,795481
Permisivo (no interferencia).3,6282,497368
Sobreprotección.2,039970440
Autoritaria (dictadura).1,684889386
No se involucra1,014493221

Download the source table (CSV, Spanish)

Men and the expression of feelings

Rejection of this idea was more frequent among those who answered “Woman” than among those who answered “Man” to the question about sex.

“Men should not show their feelings”

Answered “No, not at all”

Womann = 7,84171.6%
Mann = 7,98252.0%
Prefer not to answern = 21156.9%

16,034 records. Percentages within each response to the question about sex.

View responses, counts and source
“Men should not show their feelings” — response counts
GroupBaseNo, not at allI don’t knowYes, completely
Woman7,8415,6188781,345
Man7,9824,1532,2851,544
Prefer not to answer2111204645

Download the source table (CSV, Spanish)

Scope of these results

Source: aggregate Dashboard Encuesta tables supplied for this research. The available file does not state the fieldwork date or how participants were selected. These figures describe the recorded responses; alone, they cannot estimate frequency across the wider population or the effectiveness of the Violentómetro.

Each percentage divides the response count by its group’s base and is rounded to one decimal place. Family labels are shortened; the table retains the original categories. Family responses may overlap. The export does not explain the difference of one record between the two sections. English labels are working translations of the Spanish responses.

Accessing, citing and using the material

The reference publication

The historical ruler and the account of its creation in the IPN’s 2012 publication.

Open the PDF at page 28 (Spanish)

Citation, reproduction and permissions

Bibliographic reference, credits and guidance on reproducing or adapting the material.

Read the use and permissions guidance