Hubungan keterlibatan ayah dan motivasi berprestasi pada Mahasiswa Universitas Indonesia dengan urutan kelahiran sulung = A correlation study of father involvement and achievement motivation among firstborn college student in Universitas Indonesia

Perbandingan motivasi berprestasi dan urutan kelahiran psikologis pada remaja laki-laki bersuku Batak Toba = A comparative study of achievement motivation and psychological birth order among Batak Toba male adolescence

Hubungan antara self esteem dan motivasi berprestasi pada mahasiswa perantau di Universitas Indonesia = The relationship between self esteem and achievement motivation among migrant students at Universitas Indonesia

Hubungan antara optimisme dan motivasi berprestasi pada mahasiswa penerima beasiswa Bidikmisi di Universitas Indonesia = The correlation between optimism and achievement motivation among college student with Bidikmisi Scholarship at Universitas Indonesia

Hubungan antara social comparison dan motivasi berprestasi pada mahasiswa di Indonesia = The correlation between social comparison and achievement motivation among college students in Indonesia