NNAT3 Level B flashcards

31 cards. Read the term and the definition here. The deck at the top of this page is optional.

Grid completion rule

In a pattern-completion grid, the missing cell must satisfy the rule found in every complete row and every complete column at the same time.

Overlay keep rule

When two cells are combined, a shape present in both may be kept in the result while shapes in only one cell are dropped. Test this on a complete row before applying it.

Overlay cancel rule

The opposite of the keep rule: a shape appearing in both cells is removed, and only shapes unique to one cell remain. Complete rows reveal which overlay rule is in force.

Position shift rule

A shape may move a fixed number of cells rightward across columns and downward across rows. The missing cell continues both shifts from its row and column neighbors.

Count progression rule

The number of sides, dots, or small elements often changes by a constant amount or doubles along rows and columns. Measure the change on complete lines first.

Fill alternation rule

Fills such as black, gray, and white frequently rotate in a fixed order across a row. A complete row shows the order, and the missing cell must continue it.

Single-rule distractor

Wrong answer options in pattern completion usually violate exactly one grid rule. Verifying the chosen option against all rows and columns eliminates them.

Analogy structure

Items read as A is to B as C is to blank. The transformation linking A and B must be applied in the same direction and order to C.

Verbalize the change

Before examining options, state the A-to-B change in words, such as rotated 90 degrees clockwise and filled black, then apply that exact statement to C.

Direction trap

A common wrong option applies the inverse transformation, turning B into A instead of A into B. Confirm the direction of rotation, motion, or size change.

Order of operations

When A to B involves two changes, their sequence matters: rotate-then-invert can differ from invert-then-rotate. Match the observed sequence exactly.

Attribute mapping

If A's outer shape becomes B's inner shape, then C's outer shape must become the answer's inner shape. Each attribute maps independently and consistently.

Two-change analogy

When A and B differ in exactly two ways, the correct answer differs from C in those same two ways and matches C in every other attribute.

Size-change analogy

If B is larger or smaller than A by a set amount, the answer must be larger or smaller than C by that same amount, not by a different ratio.

Rotation analogy

A fixed turn from A to B, such as 90 degrees clockwise, must be repeated from C to the answer. The angle and direction both stay constant.

Series step size

In a sequence of frames, the change between consecutive frames is constant. Measure one step, then apply it to reach the missing frame.

Rotation series

Frames rotate by a fixed increment each step, such as 45 or 90 degrees, always in the same direction. The missing frame continues that increment.

Wrap-around motion

A shape moving in a series often exits one edge and re-enters from the opposite edge. Do not assume motion stops at the border.

Alternating series

Odd-numbered frames follow one rule and even-numbered frames follow another. Identify whether the missing frame is odd or even before applying a rule.

Dual-rate series

Two features can change at different rates in one series, such as one shape rotating while another moves one cell. Track each feature separately.

Repeat-frame distractor

A wrong option often copies the last visible frame. The correct answer is the next step in the sequence, not a duplicate of an existing frame.

Count series

The number of elements changes by a constant difference or by doubling from frame to frame. Confirm the pattern across all given frames, not just the first two.

Position series on edges

A shape may travel along the border of a square, one side per frame. Counting sides traveled predicts where the shape appears in the missing frame.

Mental rotation anchor

To judge rotation, track one distinctive feature such as a notch or dot instead of the whole figure. The anchor's position reveals the orientation quickly.

Rotation versus reflection

Rotation preserves handedness, while a mirror image reverses it. If the anchor feature sits on the wrong side, the option is a reflection, not a rotation.

Unfold in reverse

In paper-folding items, undo the folds in reverse order. Each unfold reflects the hole across the fold line, so one hole can become two, four, or eight.

Hole on fold line

A hole punched exactly on a fold line stays single when unfolded. Holes away from the line double with each unfold that crosses them.

Diagonal fold reflection

A diagonal fold reflects holes across a diagonal axis, producing diagonal patterns rather than the simple grid a straight fold would create.

Opposite cube faces

On a cube, opposite faces never touch. In a straight row of a net, two faces separated by exactly one face are opposite each other.

Stacked overlay union

When transparent shapes are stacked, the result is the union of their outlines unless the item states an intersection. Coinciding line segments appear once, not doubled.

Embedded figure match

In embedded-figure items, the target must appear at the same size and orientation unless rotation is allowed. Counting sides rejects near matches quickly.