diff --git a/R/intervention.R b/R/intervention.R
index d14e3547..3ab7339c 100644
--- a/R/intervention.R
+++ b/R/intervention.R
@@ -9,10 +9,11 @@
 #' argument.
 #'
 #' @inheritParams simulate_tree
-#' @param intvn_mean_reduction Amount of reduction in the mean. A scalar
-#' between 0 and 1.
-#' It scales the mean of `offspring_dist`. `intvn_mean_reduction` = 0 implies
-#' no intervention impact and `intvn_mean_reduction` = 1 implies full impact.
+#' @param intvn_mean_reduction A number between 0
+#' and 1 for scaling/reducing the mean of `offspring_dist`. Serves as
+#' population-level intervention. `intvn_mean_reduction` = 0
+#' implies no intervention impact and `intvn_mean_reduction` = 1 implies full
+#' impact.
 #' @param pars_list Parameter(s) for poisson or negative binomial offspring
 #' distribution.
 #' @return List of the offspring distribution parameter(s) with the mean
diff --git a/man/intvn_reduce_mean.Rd b/man/intvn_reduce_mean.Rd
index 9ae20db7..080ec2a9 100644
--- a/man/intvn_reduce_mean.Rd
+++ b/man/intvn_reduce_mean.Rd
@@ -7,10 +7,11 @@
 intvn_reduce_mean(intvn_mean_reduction, offspring_dist, pars_list)
 }
 \arguments{
-\item{intvn_mean_reduction}{Amount of reduction in the mean. A scalar
-between 0 and 1.
-It scales the mean of \code{offspring_dist}. \code{intvn_mean_reduction} = 0 implies
-no intervention impact and \code{intvn_mean_reduction} = 1 implies full impact.}
+\item{intvn_mean_reduction}{A number between 0
+and 1 for scaling/reducing the mean of \code{offspring_dist}. Serves as
+population-level intervention. \code{intvn_mean_reduction} = 0
+implies no intervention impact and \code{intvn_mean_reduction} = 1 implies full
+impact.}
 
 \item{offspring_dist}{Offspring distribution: a character string
 corresponding to the R distribution function (e.g., "pois" for Poisson,
diff --git a/man/simulate_summary.Rd b/man/simulate_summary.Rd
index d17a15b2..9c1283af 100644
--- a/man/simulate_summary.Rd
+++ b/man/simulate_summary.Rd
@@ -29,10 +29,11 @@ corresponding to the R distribution function (e.g., "pois" for Poisson,
 where \code{\link{rpois}} is the R function to generate Poisson random
 numbers).}
 
-\item{intvn_mean_reduction}{Amount of reduction in the mean. A scalar
-between 0 and 1.
-It scales the mean of \code{offspring_dist}. \code{intvn_mean_reduction} = 0 implies
-no intervention impact and \code{intvn_mean_reduction} = 1 implies full impact.}
+\item{intvn_mean_reduction}{A number between 0
+and 1 for scaling/reducing the mean of \code{offspring_dist}. Serves as
+population-level intervention. \code{intvn_mean_reduction} = 0
+implies no intervention impact and \code{intvn_mean_reduction} = 1 implies full
+impact.}
 
 \item{stat_max}{A cut off for the chain statistic (size/length) being
 computed. Results above the specified value, are set to \code{Inf}.}
diff --git a/man/simulate_tree.Rd b/man/simulate_tree.Rd
index 699d75fd..cb3d0629 100644
--- a/man/simulate_tree.Rd
+++ b/man/simulate_tree.Rd
@@ -36,10 +36,11 @@ numbers).}
 computed. Results above the specified value, are set to this value.
 Defaults to \code{Inf}.}
 
-\item{intvn_mean_reduction}{Amount of reduction in the mean. A scalar
-between 0 and 1.
-It scales the mean of \code{offspring_dist}. \code{intvn_mean_reduction} = 0 implies
-no intervention impact and \code{intvn_mean_reduction} = 1 implies full impact.}
+\item{intvn_mean_reduction}{A number between 0
+and 1 for scaling/reducing the mean of \code{offspring_dist}. Serves as
+population-level intervention. \code{intvn_mean_reduction} = 0
+implies no intervention impact and \code{intvn_mean_reduction} = 1 implies full
+impact.}
 
 \item{serials_dist}{The serial interval distribution function; the name
 of a user-defined named or anonymous function with only one argument \code{n},
diff --git a/man/simulate_tree_from_pop.Rd b/man/simulate_tree_from_pop.Rd
index 84cc079d..030f9fe8 100644
--- a/man/simulate_tree_from_pop.Rd
+++ b/man/simulate_tree_from_pop.Rd
@@ -24,10 +24,11 @@ corresponding to the R distribution function (e.g., "pois" for Poisson,
 where \code{\link{rpois}} is the R function to generate Poisson random
 numbers). Only supports "pois" and "nbinom".}
 
-\item{intvn_mean_reduction}{Amount of reduction in the mean. A scalar
-between 0 and 1.
-It scales the mean of \code{offspring_dist}. \code{intvn_mean_reduction} = 0 implies
-no intervention impact and \code{intvn_mean_reduction} = 1 implies full impact.}
+\item{intvn_mean_reduction}{A number between 0
+and 1 for scaling/reducing the mean of \code{offspring_dist}. Serves as
+population-level intervention. \code{intvn_mean_reduction} = 0
+implies no intervention impact and \code{intvn_mean_reduction} = 1 implies full
+impact.}
 
 \item{serials_dist}{The serial interval distribution function; the name
 of a user-defined named or anonymous function with only one argument \code{n},