c(person(given = "Hadley",
family = "Wickham",
role = "aut"),
person(given = "Jim",
family = "Hester",
role = c("aut", "cre"),
email = "jim.hester@rstudio.com"),
person(given = "Winston",
family = "Chang",
role = "aut"),
person(given = "RStudio",
role = "cph"),
person(given = "R Core team",
role = "ctb",
comment = "Some namespace and vignette code extracted from base R"))

c(person(given = "Hadley",
family = "Wickham",
role = "aut"),
person(given = "Jim",
family = "Hester",
role = c("aut", "cre"),
email = "jim.hester@rstudio.com"),
person(given = "Winston",
family = "Chang",
role = "aut"),
person(given = "RStudio",
role = c("cph", "fnd")))
Hadley Wickham [aut],
Jim Hester [aut, cre],
Winston Chang [aut],
RStudio [cph, fnd]

c(person(given = "Hadley",
family = "Wickham",
role = "aut"),
person(given = "Jim",
family = "Hester",
role = "aut"),
person(given = "Winston",
family = "Chang",
role = "aut"),
person(given = "Jennifer",
family = "Bryan",
role = c("aut", "cre"),
email = "jenny@rstudio.com",
comment = c(ORCID = "0000-0002-6983-2759")),
person(given = "RStudio",
role = c("cph", "fnd")))
Hadley Wickham [aut],
Jim Hester [aut],
Winston Chang [aut],
Jennifer Bryan [aut, cre] (<https://orcid.org/0000-0002-6983-2759>),
RStudio [cph, fnd]

c(
person("Hadley", "Wickham", role = "aut"),
person("Jim", "Hester", role = "aut"),
person("Winston", "Chang", role = "aut"),
person("Jennifer", "Bryan", , "jenny@rstudio.com", role = c("aut", "cre"),
comment = c(ORCID = "0000-0002-6983-2759")),
person("RStudio", role = c("cph", "fnd"))
)

Data Management and Basic Analysis of Tests
Gunter Maris, Timo Bechger, Ivailo Partchev
Data handling, Rasch model and Haberman's interaction model for
educational and psychological tests that may involve multiple test forms or
stages.
R (>= 2.10), RSQLite, plyr, reshape2, colorspace

Gunter Maris, Timo Bechger, Jesse Koops, Ivailo Partchev
A system for the management, assessment, and psychometric analysis of data from educational and psychological tests. Developed at Cito, The Netherlands, with subsidy from the Dutch Ministry of Education, Culture, and Science.
R (>= 3.3), RSQLite (>= 1.1.2), shinydashboard, shinyBS, DT
DBI, graphics, methods, utils, tidyr, colorspace, shiny,
fastmatch, purrr, formula.tools (>= 1.6.1), rlang, dplyr (>=
0.7.1), dbplyr (>= 1.0.0)