Measuring child development starts by collecting responses to 
    developmental milestones, such as "able to sit" or "says two words". 
    There are many ways to combine such responses into summaries. 
    The package bundles publicly available datasets with individual milestone 
    data for children aged 0-5 years, with the aim of supporting the construction, 
    evaluation, validation and interpretation of methodologies that aggregate 
    milestone data into informative measures of child development.

Tools for connecting to 'CHILDES', an open repository for
    transcripts of parent-child interaction. For more information on the 
    underlying data, see <https://langcog.github.io/childes-db-website/>.

Reads demographic data from a variety of public data sources, extracting and harmonizing variables useful for the study of childfree individuals. The identification of childfree individuals and those with other family statuses uses Neal & Neal's (2024) "A Framework for Studying Adults who Neither have Nor Want Children" <doi:10.1177/10664807231198869>; A pre-print is available at <doi:10.31234/osf.io/fa89m>.

Calculation of standard deviation scores and percentiles adduced from different
    standards (WHO, UK, Germany, Italy, China, etc). Also, references for laboratory values in
    children and adults are available, e.g., serum lipids, iron-related blood parameters, IGF, liver enzymes. See package documentation for full list.

Mapas terrestres con topologias simplificadas. Estos mapas no 
  tienen precision geodesica, por lo que aplica el DFL-83 de 1979 de la Republica
  de Chile y se consideran referenciales sin validez legal.
  No se incluyen los territorios antarticos y bajo ningun evento estos mapas
  significan que exista una cesion u ocupacion de territorios soberanos en
  contra del Derecho Internacional por parte de Chile. Esta paquete esta 
  documentado intencionalmente en castellano asciificado para que funcione sin 
  problema en diferentes plataformas.
  (Terrestrial maps with simplified toplogies. These maps lack geodesic
  precision, therefore DFL-83 1979 of the Republic of Chile applies and are
  considered to have no legal validity.
  Antartic territories are excluded and under no event these maps mean
  there is a cession or occupation of sovereign territories against International
  Laws from Chile. This package was intentionally documented in asciified
  spanish to make it work without problem on different platforms.)