update.achievement: Function for updating the achievement of all students during...

In mcbeem/ZPDGrowthTrajectories: Simulate achievement growth trajectories using a theoretical model of academic achievement based on the zone of proximal development

Description

Function for updating the achievement of all students during one time interval called by grow.trajectories()

Usage

## S3 method for class 'achievement'
update(
  learn.rate,
  home.env,
  decay.rate,
  achievement,
  assignment,
  dosage,
  school.weight,
  home.weight,
  decay.weight,
  school.lookup.table,
  home.lookup.table,
  which.curriculum
)

Arguments

learn.rate	vector of learning rates, one for each student
home.env	vector of home environments, one for each student
decay.rate	vector of decay rates, one for each student
achievement	vector of achievement values, one for each student
assignment	vector indicating which school curriculum will be presented during each time period, where the numbers refer to columns of the curriculum.start.points matrix and zeros represent times of no school instruction (e.g., summmer)
dosage	scalar ranging from 0 to 1 indicating the ratio of school / home exposure during time intervals where school curriculum is presented (e.g., during academic years)
school.weight	a global scalar for adjusting the growth from school exposure; prevents having to adjust all learn.rate values
home.weight	a global scalar for adjusting the growth from home; prevents having to adjust all home.env values
decay.weight	a global scalar for adjusting the rate of forgetting; prevents having to adjust all decay.rate values
school.lookup.table	the school growth lookup table produced by the build_school_lookup() function
home.lookup.table	the home growth lookup table produced by the build_home_lookup() funtion
which.curriculum	a vector of values indicating which version of the school curriculum should be presented during interval t. The numbers index list elements of the curriculum.start.points and curriculum.widths objects

Examples

## Not run: 
curriculum.start.points <- matrix(c(.1, .2, .3), ncol=1)

curriculum.widths <- matrx(rep(.11, 3), ncol=1)

school.lookup.table <- build.school.lookup(integration.points=2000, ZPD.width=.05,
                                           ZPD.offset=.02,
                                           curriculum.start.points=curriculum.start.points,
                                           curriculum.widths=curriculum.widths,
                                           slope1=10, slope2=30, maxachievement=1.5)

home.lookup.table <- build.home.lookup(integration.points=2000, ZPD.width=.05, ZPD.offset=.02,
                                       rate=4, maxachievement=1.5)

update.achievement(learn.rate=c(.05, .04, .03), home.env=c(.15, .2, .08),
                   decay.rate=c(.001, .002, .0015),
                   achievement=rep(.15, 3), which.curriculum=1,
                   assignment=1, decay.weight=.25, school.weight=1, home.weight=1,
                   dosage=.8, school.lookup.table=list(school.lookup.table),
                   home.lookup.table=home.lookup.table)

## End(Not run)

mcbeem/ZPDGrowthTrajectories documentation built on May 18, 2020, 2:04 p.m.