Which of the following is NOT a primary rule of interpretation under the ICSI Lesson 3 classification?
- Rule of Literal Construction
- Mischief Rule or Heydon's Rule
- Noscitur a Sociis
- Rule of Ejusdem Generis
Show answer and solution
Correct answer: C. Noscitur a Sociis
1. The five **primary rules** in the ICSI text are:
(a) Literal Construction,
(b) Mischief Rule or Heydon's Rule,
(c) Rule of Reasonable Construction (*Ut Res Magis Valeat Quam Pareat*),
(d) Harmonious Construction, and
(e) *Ejusdem Generis*.
2. ***Noscitur a Sociis*** is listed under '**Other Rules** of Interpretation', not the primary rules — alongside *Expressio Unis Est Exclusio Alterius*, *Contemporanea Expositio Est Optima Et Fortissima in Lege*, and Strict and Liberal Construction.
3. The ICSI in-line question box gives the same answer: 'Which of the following is not a primary rule of Interpretation? Answer: (C) Noscitur a Sociis.'
4. The discipline is to keep the five primaries and four others distinct in memory.
_Source: ICSI CS Executive — Lesson 3, 'General Principles of Interpretation', p. 85 + question box, p. 88._