Running examples in 'languageR-Ex.R' failed
The error most likely occurred in:

> ### Name: durationsOnt
> ### Title: Durational measurements on the Dutch prefix ont-
> ### Aliases: durationsOnt
> ### Keywords: datasets
> 
> ### ** Examples
> 
> data(durationsOnt)
> 
> ###### modeling the duration of the prefix
> 
> prefix.lm = lm(DurationOfPrefix ~ (YearOfBirth + SpeechRate) * Frequency, 
+    data = durationsOnt)
> summary(prefix.lm)

Call:
lm(formula = DurationOfPrefix ~ (YearOfBirth + SpeechRate) * 
    Frequency, data = durationsOnt)

Residuals:
      Min        1Q    Median        3Q       Max 
-0.099022 -0.023386  0.000158  0.026762  0.080279 

Coefficients:
                        Estimate Std. Error t value Pr(>|t|)    
(Intercept)            0.2553451  0.0345126   7.399 5.20e-11 ***
YearOfBirth           -0.0018550  0.0004437  -4.181 6.42e-05 ***
SpeechRate             0.0022573  0.0054251   0.416  0.67828    
Frequency             -0.0097943  0.0106787  -0.917  0.36135    
YearOfBirth:Frequency  0.0004374  0.0001428   3.063  0.00284 ** 
SpeechRate:Frequency  -0.0032922  0.0018223  -1.807  0.07395 .  
---
Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1

Residual standard error: 0.03532 on 96 degrees of freedom
Multiple R-squared:  0.221,	Adjusted R-squared:  0.1804 
F-statistic: 5.446 on 5 and 96 DF,  p-value: 0.0001872

> 
> # ---- model criticism
> 
> plot(prefix.lm)
> outliers = c(36, 35, 17, 72)
> prefix.lm = lm(DurationOfPrefix ~ (YearOfBirth + SpeechRate) * Frequency, 
+    data = durationsOnt[-outliers,])
> summary(prefix.lm)

Call:
lm(formula = DurationOfPrefix ~ (YearOfBirth + SpeechRate) * 
    Frequency, data = durationsOnt[-outliers, ])

Residuals:
      Min        1Q    Median        3Q       Max 
-0.098553 -0.025442 -0.000857  0.026944  0.081562 

Coefficients:
                        Estimate Std. Error t value Pr(>|t|)    
(Intercept)            0.2517499  0.0350307   7.187 1.71e-10 ***
YearOfBirth           -0.0018584  0.0004511  -4.119 8.29e-05 ***
SpeechRate             0.0029918  0.0054993   0.544  0.58773    
Frequency             -0.0080787  0.0110724  -0.730  0.46747    
YearOfBirth:Frequency  0.0004433  0.0001456   3.045  0.00304 ** 
SpeechRate:Frequency  -0.0037299  0.0018739  -1.990  0.04951 *  
---
Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1

Residual standard error: 0.03556 on 92 degrees of freedom
Multiple R-squared:  0.2291,	Adjusted R-squared:  0.1872 
F-statistic: 5.468 on 5 and 92 DF,  p-value: 0.0001888

> 
> ###### modeling the presence of the /t/ 
> 
> library(rms)
Loading required package: Hmisc
Error: package or namespace load failed for 'Hmisc' in loadNamespace(j <- i[[1L]], c(lib.loc, .libPaths()), versionCheck = vI[[j]]):
 there is no package called 'rstudioapi'
Error: package 'Hmisc' could not be loaded
Execution halted