Capitalize journal title for apa in Latex - latex

Question

I am using overleaf to put together my references that follow the apa 7th edition. The journal titles however are not capitalized. How do I correct that? Note that I tried the method suggested in this post Capitalize journal name in latex but it didn't work for me.
Here is a minimal reproducible example:
\documentclass[man]{apa7}
\usepackage[american]{babel}
\usepackage{csquotes}
\usepackage[style=apa,uniquename=false,sortcites=true,sorting=nyt,backend=biber]{biblatex}
\DeclareLanguageMapping{american}{american-apa}
\addbibresource{refs.bib}
\begin{document}
\parencite{golinkoff1979comparison} said this
\printbibliography
\end{document}
My refs.bib here
#article{golinkoff1979comparison,
title={A comparison of fathers' and mothers' speech with their young children},
author={Golinkoff, Roberta Michnick and Ames, Gail Johnson},
journal={Child development},
pages={28--32},
year={1979},
publisher={JSTOR}
}
The reference prints this:
This is a cross post: https://tex.stackexchange.com/questions/670231/capitalize-journal-title-for-apa-in-latex

Answer 1

Same method as in the post you linked to:
\documentclass[man]{apa7}
\usepackage[american]{babel}
\title{text}
\shorttitle{short title}
\usepackage{csquotes}
\usepackage[style=apa,uniquename=false,sortcites=true,sorting=nyt,backend=biber]{biblatex}
\DeclareLanguageMapping{american}{american-apa}
\begin{filecontents*}[overwrite]{\jobname.bib}
#article{golinkoff1979comparison,
title={A comparison of fathers' and mothers' speech with their young children},
author={Golinkoff, Roberta Michnick and Ames, Gail Johnson},
journal={Child development},
pages={28--32},
year={1979},
publisher={JSTOR}
}
\end{filecontents*}
\usepackage{mfirstuc}
\DeclareFieldFormat{journaltitle}{\capitalisewords{#1}}
\addbibresource{\jobname.bib}
\begin{document}
\parencite{golinkoff1979comparison} said this
\printbibliography
\end{document}