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Related Concept Videos

Variation: Normal Distribution, Range, and Standard Deviation02:32

Variation: Normal Distribution, Range, and Standard Deviation

In the field of psychology, there are several ways to organize measurements of a trait, feature, or characteristic (i.e., variables). Qualitative data, such as ethnicity, can be tabulated into a frequency count to provide information about the proportion, as well as the variety of groups in a sample or population. On the other hand, researchers can perform a wider set of calculations on quantitative data. The mean, mode, and median, for instance, are central tendency measures to identify a...
Nature and Nurture01:10

Nature and Nurture

Many human characteristics, like height, are shaped by both nature—in other words, by our genes—and by nurture, or our environment. For example, chronic stress during childhood inhibits the production of growth hormones and consequently reduces bone growth and height. Scientists estimate that 70-90% of variation in height is due to genetic differences among individuals, and 10-30% of variation in height is due to differences in the environments that individuals experience, such as differences...
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Signs of Puberty

Puberty is a critical phase, typically beginning between the ages of 8 and 13 in girls and 9 and 14 in boys, though timing can vary based on genetics, environmental factors, and overall health. This period is characterized by the development of secondary sexual characteristics and the attainment of reproductive potential. Endocrine changes underpin puberty, with hormonal surges of Luteinizing Hormone (LH) and Follicle-Stimulating Hormone (FSH) instigated by Gonadotropin-Releasing Hormone (GnRH)...
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Related Experiment Video

Updated: Jun 12, 2026

Importance of Jumping Ability in Handball Throwing Speed and Accuracy
02:43

Importance of Jumping Ability in Handball Throwing Speed and Accuracy

Published on: April 4, 2025

Sex differences in the height from which suicides jump.

Shi-Wei Mao1, David Lester

  • 1Xi'an Jiaotong University.

Psychological Reports
|June 8, 2010
PubMed
Summary

Men and women who died by suicide by jumping in China jumped from similar heights. This analysis reviewed 321 cases of suicide by jumping across five Chinese cities and provinces.

Area of Science:

  • Forensic science
  • Public health
  • Epidemiology

Background:

  • Suicide by jumping is a significant public health concern.
  • Understanding the methods and circumstances of suicide is crucial for prevention strategies.

Purpose of the Study:

  • To analyze the heights from which individuals died by suicide by jumping.
  • To compare the jumping heights between men and women in suicide cases.

Main Methods:

  • Retrospective analysis of 321 suicide by jumping cases.
  • Data collected from five cities and provinces in China.
  • Comparison of jumping heights between genders.

Main Results:

  • Analysis of 321 suicides by jumping indicated no significant difference in jumping heights between men and women.

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Non-invasive Assessments of Subjective and Objective Recovery Characteristics Following an Exhaustive Jump Protocol
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Non-invasive Assessments of Subjective and Objective Recovery Characteristics Following an Exhaustive Jump Protocol

Published on: June 8, 2017

Related Experiment Videos

Last Updated: Jun 12, 2026

Importance of Jumping Ability in Handball Throwing Speed and Accuracy
02:43

Importance of Jumping Ability in Handball Throwing Speed and Accuracy

Published on: April 4, 2025

Non-invasive Assessments of Subjective and Objective Recovery Characteristics Following an Exhaustive Jump Protocol
08:21

Non-invasive Assessments of Subjective and Objective Recovery Characteristics Following an Exhaustive Jump Protocol

Published on: June 8, 2017

  • The study examined cases across multiple urban and provincial locations in China.
  • Conclusions:

    • Jumping height does not appear to be a differentiating factor between genders in suicides by jumping.
    • Further research is needed to explore other potential gender-specific factors in suicide by jumping.